WIND TUNNEL TEST WITH MOVING VEHICLE MODEL FOR AERODYNAMIC FORCES OF VEHICLE-BRIDGE SYSTEMS UNDER CROSS WIND
|
|
- Lionel Simon
- 6 years ago
- Views:
Transcription
1 The Seventh Asia-Pacific Conference on Wind Engineering, November 8-1, 009, Taipei, Taiwan WIND TUNNEL TEST WITH MOVING VEHICLE MODEL FOR AERODYNAMIC FORCES OF VEHICLE-BRIDGE SYSTEMS UNDER CROSS WIND ABSTRACT Yong-le Li 1, Peng Hu 1, Ming-jin Zhang 1, Hai-li Liao 1 1 Professor, Department of Bridge Engineering, Southwest Jiaotong University Chengdu , Sichuan, P.R. China, lele@swjtu.edu.cn The complicated interactions among wind, vehicle and bridge should be considered in the wind-vehicle-bridge (WVB) systems. The aerodynamic forces of vehicle and bridge are the important parameters in studying the coupled vibration of the WVB systems. These parameters are usually obtained by theoretical analysis or computational fluid dynamics (CFD) simulation or wind tunnel model test. Most researches often neglect the relative motion between vehicle and bridge. In this paper, a new experimental setup is presented with considering the movement of vehicles to measure the aerodynamic forces of a moving vehicle-bridge system under the cross wind. Various cases are carried out to demonstrate more realistic roles of each factor in the system, such as vehicle speed, vehicle location on different tracks, the effect of head car and tail car, and etc. KEYWORDS: AERODYNAMIC FORCES, MOVING VEHICLE, WIND-VEHICLE-BRIDGE SYSTEM, WIND TUNNEL TEST, WIND LOAD Introduction The coupled vibration between moving rail vehicles and a bridge under cross wind would occur due to the interaction among wind,vehicle and bridge, which represents the special features of the wind-vehicle-bridge (WVB) system [1]. Since wind loads on vehicles will be affected by the existence of the bridge deck and vice versa, effects of static and dynamic wind loads acting on vehicles may be of great significance in the WVB system, especially when train vehicles run at high speed. Interaction between wind and vehicles running on the ground was investigated often through either theoretical analysis or computational fluid dynamics (CFD) simulation or wind tunnel model test.[1] Nevertheless, due to its great complexity and difficulty, the wind tunnel experiment is still the major and most reliable tool for this problem[]. In order to obtain aerodynamics on vehicles, conventionally, section model test are conducted by static methodologies with the models of vehicles fixed in the wind tunnel statically [4]. These static tests do not simulate the relative motion between vehicles and bridge deck or ground, thus do not take into account the effect of vehicles relative motion [3]. In the early 1980 s, to overcome shortcomings of static methodologies, C.J. Baker [3] carried out some experiments with a train model of 1/50 th scale running across the wind tunnel by some well-designed spring devices. His experiments took into account the effects of both vehicles motion and atmospheric turbulence through simulated boundary layer, determining aerodynamic forces and moments of the train involved. Baker s experiments started an attempt of moving model test on the simulated ground. However, currently, there are very few similar studies, not to mention systemic analyses for aerodynamic interaction of vehicle motion and its supporting structure, the bridge deck. This
2 is mainly attributed to the so small model scale and the so short valid test time for the model moving through the tunnel section owing to the limited wind tunnel size, which leads to the very considerable difficulties about these experiments conducting and uncertainties of the results concerned. Fortunately, a newly built industry wind tunnel XNJD-3 at Southwest Jiaotong University, P.R. China facilitates the moving model test. The tunnel spans up to 4 m at the test section with a height of 4.5m. Take advantage of the experimental condition, a new experimental setup is presented with considering the movement of vehicles to measure the aerodynamic forces of a moving vehicle-bridge system under the cross wind. A series of advanced and detailed investigation on the vehicles motion effects is conducted in this paper. Moving Vehicle Model and Testing Methods A set of devices were conceived and manufactured. Generally, the devices constitute 4 cooperating component systems: the models of vehicles and bridge deck, the supporting frame, the launch & recovery system, and the measurement system. To get an overall understanding about the experimental system, see the general arrangement of the moving vehicle model as shown in Fig.1. Motor Guide rail Train models Bear frame 6-Component balance Bridge deck Guide rail 5-Component balance Fig. 1: Overall configuration of the experiment system The model system includes bridge deck models and train vehicle models. According to the span of test section of the wind tunnel, the model scale of bridge deck and train is determined as 1/45. The deck is simulated by rigid section model which made of hard wood. In order to explore the change of flow characteristics with relative locations of the train on the deck, the tracks may be installed on either the side or middle of the deck, which are marked by the letters of A, B, C, D respectively, as shown in Fig.. The overall length of the deck model is 13.07m long. The train models are made of hard wood, too, according to the geometrical scale, the head car, the intermediate car and tail car represent the locomotive, the carriage and the tail of the train respectively, as shown in Fig.3. The wheels were not reproduced, but the clearance between the vehicle bottom and the tracks is simulated. The support frame consists Flow direction of 4 spans of steel continuous D C B A beam bellow which a notch shape Vehicle Vehicle Vehicle Vehicle guide rail was fixed. Fig.4 shows a sketchy layout of the models with the support frame. It is very Bridge important to ensure the train models get a smooth motion; therefore, the guide rail was Fig. : The location of the tracks manufactured as smoothing as possible, since a sliding block that links the train vehicles by a vertical rigid rod needs to travel along the guide rail. Besides, the friction and the rail irregularities are reduced to the minimum and the deflection of the steel continuous beam is checked up by FEM analysis. The overall length of the guide rail is 18m, which identified with 3 functional units. The first 4.5m
3 is used to accelerate for the train, m serves as uniform motion segment keeping the train motion at a certain speed, and m is the deceleration segment as buffer distance. The train models can be droved by a servo motor (refer to Fig.1) fixed at the end of the guiding rail, which is specially designed to drag the models at a speed varied from 0 to 10m/s with a specific acceleration and the corresponding duration time. The motor serves fully automatically with a programed parameter set; consequently the models would have a desired resultant journey. With respect to the recovery process, it is supposed for the models to skid to halt with a buffer. The motor power would be cut off automatically as soon as the models reach the last 4.5m journey, thus the models skid on, decelerate gradually and halt finally owing to extension reaction from the four elastic rubber bands along the last 4.5m journey. A six-component balance iss fixed on the train carriage to measure its aerodynamic forces and moments at 6 directions (refer to Fig.1 and Fig.4): the drag force, side force, lift force, rolling moment, pitching moment and yawing moment, respectively. Besides, the bridge measurement section with 0.5m length (refer to Fig.4), which is discontinuous but close to the adjacent decks, are measured with another five-component balance (refer to Fig.1 and Fig.4), but only 3 components are concerned: the side force, lift force and longitudinal moment. The force signal of balances should be amplified first prior to being collected by an A/D board. With a short sampling period of 100μs, thedynamic and instantaneous force signals that associated to the models are recorded. In order to obtain adequate data sampling resolution, choose 909Hz as the sampling frequency for the measurement. T ransition section Measurement section Transition section 6-Component balance Fig. 3: Train vehicle models used in case study Measurement section Driving direction Bear frame 6-Component balance Vehicle G liding block Bridge deck 5-Component balance Fig. 4: Local view of the mock-up Aerodynamic Coefficients The aerodynamic coefficients of vehicles and bridge deck could be defined with the same formulas as follows: Drag Coefficient (side force) CH = FH ( 1 ρv HL) (1) Lift coefficient CV = FV ( 1 ρv BL ) () Moment coefficient CM = FM ( 1 ρv B L) (3) In the above equations, where 1 ρ V is the dynamic pressure of wind; H, B and L are the height, width and the length of the section model respectively. F H, F V and F M are the drag force, lift force and moment, C H, CV andc M are the drag coefficient, lift coefficient and the moment coefficient, respectively.
4 Data Processing In the process of vehicle motion, due to the influence of the vibration of the vehicle and the bidirectional transformation linker, the inertia force caused by the vehicle speed variation, the irregularity of the guide rail, and etc, the testing signals of the aerodynamic forces will be obviously interference when the vehicle runs at a relatively high velocity, therefore, there will be some error in the calculation of the aerodynamic forces and moments if using the original signal. The time history curves of the vehicle drag coefficient at the cross wind speed of 8 m/s and the train speed of 6 m/s is shown in Fig.5 (a). It appears an obvious fluctuation with the interference signals. According to the spectrum analysis of the time history curve, it is shown that there are mainly two frequency bands. By studying the vehicle and bidirectional transformation linker,finding that the two frequency bands just correspond with the nature frequency of the vehicle and the bidirectional transformation linker, with the frequency ranges of 6~8Hz and 1~14Hz. Based on investigating the frequency spectrums of many signal curves, it is determined to adopt the low-pass filter with the cut-off frequency of 4 Hz to handle the original signal curves. The time history curve of the vehicle drag coefficient has been filtered as shown in Fig.5 (b). It is shown that the interference signals are obvious reduced, but there is still some fluctuation in the stationary section where vehicles run at uniform speed. According to the accelerating duration time which is preset, one entire time history curve could be divided into the acceleration section, the stationary section and the deceleration section after the aerodynamic signal are filtered(refer to Fig.5 (b)), and then take the average value of the stationary section as the representative value. In order to increase the stability of the data, each test condition is carried out for five times, and take the average value of the five time tests as the final representative value for each test case. 6 4 Vehicle drag coefficient Vehicle drag coefficient 3 1 Acceleration section Stationary section Deceleration section Time (s) Test Results and Analysis Time (s) (a) (b) Fig.5 Time-history curve of vehicle drag coefficient (a) Before filtering (b) After filtering Effects of the Vehicle Speed When the train runs along the A track, in order to investigate the effects of the vehicle speed, train is driven at three different vehicle speeds, 4m/s, 6m/s, 8m/s, respectively. The vehicle speed just refers to the uniform speed at stationary section. The curves of the vehicle drag coefficient at different vehicle speed as shown in Fig.6. The curves of the vehicle drag coefficient become fluctuant when the velocity of the vehicle are increased. And the change of the vehicle drag coefficient is irregular at the different vehicle speeds, which
5 indicates that the vehicle drag coefficient is insensitive to the vehicle speed, so are the vehicle lift coefficient and moment coefficient. The possible reason is that the airflow field around the section models of vehicles and bridge deck becomes stable due to the existence of the transition section vehicles which is on the both sides of the measurement section vehicle (refer to Fig.3); in addition, the cross section of the vehicle is so regular that the influence of three-dimensional airflow field induced by the vehicle movement should be limited, therefore, the aerodynamic forces of vehicles have less change. The aerodynamic coefficients corresponding to the resultant wind velocity basically follow the Cosine rule. The Fig.7~Fig.9 show the aerodynamic coefficients of the bridge deck. The aerodynamic coefficients have less change at different vehicle speeds when the vehicle has not get to the measurement section of the bridge. While the location of vehicle is just on the measurement section of the bridge (at the range of 4.5m~5.5m of guiding rail), the drag coefficient of the bridge becomes smaller, but there is a little difference at the different vehicle speed. The lift coefficient and the moment coefficient of the bridge are sensitive to the vehicle speed, the absolute value of the lift coefficient become smaller while the absolute value of the moment coefficient increase slightly when the velocity of the vehicle increases. For the vehicle running along the bridge at a certain velocity under the cross wind, its real wind direction is a vector combining the incoming wind speed and vehicle speed which along the bridge axis. In the case of different wind speed (6m/s 8m/s 10m/s) and different vehicle speed (4m/s 6m/s 8m/s), the aerodynamic coefficients of the vehicle and bridge change with the resultant wind direction as shown in Fig10 and Fig11, both the aerodynamic coefficient of the vehicle and bridge are insensitive to the yaw angle of the wind. Fig.1 and Fig.13 show the aerodynamic coefficients of vehicle and bridge change with the resultant wind velocity, which reflects the effects of Reynolds number in some degree. the Reynolds number has some influence on the aerodynamic coefficients of vehicle and bridge, but not obvious. Effects of the vehicle location on different tracks When the vehicle is on the A, B, C and D track respectively, the aerodynamic coefficients of the vehicle and bridge are tested as shown in Fig.14 and Fig.15. During the vehicle changes from the track of A to D, the drag coefficient of the vehicle decreases gradually, while the drag coefficient of the bridge increases gradually. Vehicle drag coefficients.0 4m/s 6m/s 8m/s Bridge drag coefficients.0 4m/s 6m/s 8m/s Fig.6 Vehicle drag coefficients Distance (s) Fig.7 Bridge drag coefficients
6 Bridge lift coefficients m/s 6m/s 8m/s Fig.8 Vehicle drag coefficients Bridge moment coefficients m/s 6m/s 8m/s Fig.9 Bridge drag coefficients Vehicle aerodynamic coefficients Bridge aerodynamic coefficients Yaw angle β ( ) Fig.10 Vehicle drag coefficients Yaw angleβ ( ) Fig.11 Bridge drag coefficients 1.5 Vehicle aerodynamic coefficients Bridge aerodynamic coefficients Resultant wind velocity(m/s) Fig.1 Vehicle drag coefficients Resultant wind velocity( m/s) Fig.13 Bridge drag coefficients Vehicle aerodynamic coefficients A B C D Location of tracks Fig.14 Vehicle aerodynamic coefficients Bridge aerodynamic coefficients - A B C D Location of tracks Fig.15 Bridge aerodynamic coefficients
7 Effects of the Head Car and Tail Car The high-speed train usually adopts the streamline shape for the head car and tail car. In order to investigate the aerodynamic characteristics of the intermediate car, therefore, installing the transition section (head car and tail car) on the both sides of the intermediate car. To investigate the effects of the head car and the tail car, carrying out the contrast test of single vehicle (the intermediate car) and three vehiles (head car, intermediate car and tail car) at the track A and D respectively. The vehicle drag coefficients at the wind speed of 8m/s and vehicle speed of 6m/s are shown in the Table 1. Regardless of the vehicle at the track of A or D, the drag coefficient at three cars case is smaller than at single car case. It indicates that the head car and the tail car have obvious effect on the vehicle drag coefficient. Fig.16~ Fig.18 show the time history curves of drag coefficient at single car case and three cars case at different vehicle speeds. The vehicle drag coefficient increases slightly with the vehicle speed despite of the single car case or three cars case. Besides, for single car case, vehicle speed has more significant effect on the vehicle drag coefficient. Table 1 Vehicle aerodynamic coefficient vehicle Vehicle aerodynamic coefficient Location of tracks condition Single car A Three cars Single car Vehicle drag coefficients.0 Single car Three cars D Three cars Fig.16 Vehicle aerodynamic coefficients..0 Vehicle drag coefficients.0 Single car Three cars Fig.17 Vehicle aerodynamic coefficients Vehicle drag coefficients Single car Three cars Fig.18 Bridge aerodynamic coefficients Conclusions By the study on the moving vehicle model for aerodynamic forces of vehicle-bridge systems, come to some conclusions as follows:
8 1. Considering the vehicle motion and the interaction between vehicles and bridge, a moving vehicle model system in the wind tunnel test is developed. The system could be fit well for testing the aerodynamic forces of vehicles and bridge deck with different vehicle speeds, wind speeds and different combination forms of vehicle and bridge.. For the case of the three cars, the aerodynamic coefficients corresponding the resultant wind speed and wind direction basically obey the Cosine rule. When the location of vehicle is just on the measurement section of the bridge, the absolute value of the lift coefficient becomes smaller while the absolute value of the moment coefficient increases slightly when the velocity of the vehicle. 3. With the track moved from the windward side track to the leeward side track, the drag coefficient of the vehicle decrease gradually, while the drag coefficient of the bridge increases gradually. It indicates that the relative locations between the vehicle and the deck have an obvious effect on the aerodynamic characteristics of the vehicle-bridge system. 4. The drag coefficients of intermediate vehicle at three cars case are smaller than at the single car case, which indicates that the head car and the tail car have obvious effect on the vehicle drag coefficient. Besides, for single car case, vehicle speed has more significant effect on the vehicle drag coefficient. The moving vehicle model is installed in the wind tunnel. Although the tunnel span is up to.5 m at the test section, and the guiding rail is up to 18m long, the total duration time of the stationary section of vehicle movement is very short except the acceleration section and deceleration section, so is the duration time of the vehicle running through the measurement section of the bridge. Therefore, it will lead to some fluctuation in the test data. The problem of short valid test time and signal noise need to be further improved. References [1] Yongle Li, Shizhong Qiang, Haili Liao, and Y.L. Xu(005), Dynamics of Wind - Rail vehicle - Bridge Systems, Journal of Wind Engineering and Industrial Aerodynamics, 93(005), [] R.K. Cooper (1993), Bluff-Body Aerodynamics as Applied to Vehicles, Journal of Wind Engineering and Industrial Aerodynamics, 49(1993), 1-. [3] C.J. Baker (1986), Train Aerodynamic Forces and Moments from Moving Model Experiments, Journal of Wind Engineering and Industrial Aerodynamics, 4(1986), [4] Stephane Sanquer, Christian Barre, Marc Dufresne de Virel and Louis-Marie Cleon (004), Effect of cross winds on high-speed trains: development of new experimental methodology, Journal of Wind Engineering and Industrial Aerodynamics, 9(004),
Influence of Ground Effect on Aerodynamic Performance of Maglev Train
2017 2nd International Conference on Industrial Aerodynamics (ICIA 2017) ISBN: 978-1-60595-481-3 Influence of Ground Effect on Aerodynamic Performance of Maglev Train Shi Meng and Dan Zhou ABSTRACT Three-dimensioned
More informationAerodynamic Characteristics of Sedan with the Rolling Road Ground Effect Simulation System
Vehicle Engineering (VE) Volume 2, 2014 www.seipub.org/ve Aerodynamic Characteristics of Sedan with the Rolling Road Ground Effect Simulation System Yingchao Zhang 1, Linlin Ren 1, Kecheng Pan 2, Zhe Zhang*
More informationExperimental Study on Flutter Performance of a 1700m Long Truss Girder Suspension Bridge
Experimental Study on Flutter Performance of a 1700m Long Truss Girder Suspension Bridge *Yanguo Sun 1), Haili Liao 2) and Mingshui Li 3) 1), 2), 3) Research Centre for Wind Eng., Southwest Jiaotong University,
More informationStudy on System Dynamics of Long and Heavy-Haul Train
Copyright c 2008 ICCES ICCES, vol.7, no.4, pp.173-180 Study on System Dynamics of Long and Heavy-Haul Train Weihua Zhang 1, Guangrong Tian and Maoru Chi The long and heavy-haul train transportation has
More informationEFFECT OF SURFACE ROUGHNESS ON PERFORMANCE OF WIND TURBINE
Chapter-5 EFFECT OF SURFACE ROUGHNESS ON PERFORMANCE OF WIND TURBINE 5.1 Introduction The development of modern airfoil, for their use in wind turbines was initiated in the year 1980. The requirements
More informationCFD Analysis of Oil Discharge Rate in Rotary Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering CFD Analysis of Oil Discharge Rate in Rotary Compressor Liying Deng haitunsai@.com Shebing
More informationMulti-axial fatigue life assessment of high speed car body based on PDMR method
MATEC Web of Conferences 165, 17006 (018) FATIGUE 018 https://doi.org/10.1051/matecconf/01816517006 Multi-axial fatigue life assessment of high speed car body based on PDMR method Chaotao Liu 1,*, Pingbo
More informationSpecial edition paper
Efforts for Greater Ride Comfort Koji Asano* Yasushi Kajitani* Aiming to improve of ride comfort, we have worked to overcome issues increasing Shinkansen speed including control of vertical and lateral
More informationInfluence of pantograph fixing position on aerodynamic characteristics of high-speed trains
DOI 1.17/s4534-17-125-y Influence of pantograph fixing position on aerodynamic characteristics of high-speed trains Liang Zhang 1 Jiye Zhang 1 Tian Li 1 Weihua Zhang 1 Received: 28 September 216 / Revised:
More informationA study on aerodynamic drag of a semi-trailer truck
Available online at www.sciencedirect.com Procedia Engineering 56 (013 ) 01 05 5 th BSME International Conference on Thermal Engineering A study on aerodynamic drag of a semi-trailer truck Harun Chowdhury*,
More informationAnalysis of Aerodynamic Performance of Tesla Model S by CFD
3rd Annual International Conference on Electronics, Electrical Engineering and Information Science (EEEIS 2017) Analysis of Aerodynamic Performance of Tesla Model S by CFD Qi-Liang WANG1, Zheng WU2, Xian-Liang
More information1064. Conversion and its deviation control of electric switch machine of high speed railway turnout
164. Conversion and its deviation control of electric switch machine of high speed railway turnout Rong Chen, Ping Wang, Hao Xu 164. CONVERSION AND ITS DEVIATION CONTROL OF ELECTRIC SWITCH MACHINE OF HIGH
More informationExperimental investigation on vibration characteristics and frequency domain of heavy haul locomotives
Journal of Advances in Vehicle Engineering 3(2) (2017) 81-87 www.jadve.com Experimental investigation on vibration characteristics and frequency domain of heavy haul locomotives Lirong Guo, Kaiyun Wang*,
More informationINVESTIGATION OF ICING EFFECTS ON AERODYNAMIC CHARACTERISTICS OF AIRCRAFT AT TSAGI
INVESTIGATION OF ICING EFFECTS ON AERODYNAMIC CHARACTERISTICS OF AIRCRAFT AT TSAGI Andreev G.T., Bogatyrev V.V. Central AeroHydrodynamic Institute (TsAGI) Abstract Investigation of icing effects on aerodynamic
More informationDesign and experiment of hydraulic impact loading system for mine cable bolt
Procedia Earth and Planetary Science 1 (2009) 1337 Procedia Earth and Planetary Science www.elsevier.com/locate/procedia The 6 th International Conference on Mining Science & Technology Design and experiment
More informationRigid-Flexible Coupling Dynamics Simulation Analysis of Wheel/Rail Interaction in High-speed Turnout Zone
Rigid-Flexible Coupling Dynamics Simulation Analysis of Wheel/Rail Interaction in High-speed Turnout Zone 1 China Academy of Railway Sciences Beijing, 100081, China E-mail: ym890531@163.com Weidong Wang
More informationExperimental Study on Torsional Vibration of Transmission System Under Engine Excitation Xin YANG*, Tie-shan ZHANG and Nan-lin LEI
217 3rd International Conference on Applied Mechanics and Mechanical Automation (AMMA 217) ISBN: 978-1-6595-479- Experimental Study on Torsional Vibration of Transmission System Under Engine Excitation
More informationPlanetary Roller Type Traction Drive Unit for Printing Machine
TECHNICAL REPORT Planetary Roller Type Traction Drive Unit for Printing Machine A. KAWANO This paper describes the issues including the rotation unevenness, transmission torque and service life which should
More informationAN EXPERIMENTAL STUDY OF THE AERODYNAMICS FORCES ACTING ON A TRUCK
AN EXPERIMENTAL STUDY OF THE AERODYNAMICS FORCES ACTING ON A TRUCK Mustofa* * Abstract The aim of this project is to show the aerodynamics experiment results of a truck in terms of drag coefficient (C
More informationTransverse Distribution Calculation and Analysis of Strengthened Yingjing Bridge
Modern Applied Science; Vol. 8, No. 3; 4 ISSN 93-844 E-ISSN 93-85 Published by Canadian Center of Science and Education Transverse Distribution Calculation and Analysis of Strengthened Yingjing Bridge
More informationVibration Measurement and Noise Control in Planetary Gear Train
Vibration Measurement and Noise Control in Planetary Gear Train A.R.Mokate 1, R.R.Navthar 2 P.G. Student, Department of Mechanical Engineering, PDVVP COE, A. Nagar, Maharashtra, India 1 Assistance Professor,
More informationVIBRATION OF AUTOMOBILE SIDE VIEW MIRROR DUE TO AERODYNAMIC INPUTS
Proceedings of the International Conference on Mechanical Engineering 25 (ICME25) 28-3 December 25, Dhaka, Bangladesh ICME5- VIBRATION OF AUTOMOBILE SIDE VIEW MIRROR DUE TO AERODYNAMIC INPUTS Rajneesh
More informationFLOW CONTROL THROUGH VORTEX SHEDDING INTERACTION OF ONE CYLINDER DOWNSTREAM OF ANOTHER. Jonathan Payton 1, and *Sam M Dakka 2
International Journal of GEOMATE, May, 2017, Vol.12, Issue 33, pp. 53-59 Geotec., Const. Mat. &Env., ISSN:2186-2990, Japan, DOI: http://dx.doi.org/10.21660/2017.33.2565 FLOW CONTROL THROUGH VORTEX SHEDDING
More informationUser Manual. Aarhus University School of Engineering. Windtunnel Balance
Aarhus University School of Engineering Windtunnel Balance User Manual Author: Christian Elkjær-Holm Jens Brix Christensen Jesper Borchsenius Seegert Mikkel Kiilerich Østerlund Tor Dam Eskildsen Supervisor:
More informationResearch on Test Methods of Frame Torsional Rigidity Lu JIA1,2, Huanyun DAI1 and Ye SONG1
International Industrial Informatics and Computer Engineering Conference (IIICEC 2015) Research on Test Methods of Frame Torsional Rigidity Lu JIA1,2, Huanyun DAI1 and Ye SONG1 1 State Key Laboratory of
More informationPrediction of wheel/rail rolling contact wear under the situation of wheel/rail vibration
First International Conference on Rail Transportation Chengdu, China, July 10-12, 2017 Prediction of wheel/rail rolling contact wear under the situation of wheel/rail vibration Qian XIAO1,2 Chao CHANG1,
More informationVehicle Aerodynamics Subscription Development of Numerical Simulation Method of Flow Around Automobile Using Meshfree Method
Vehicle Aerodynamics Subscription 2005-01-0544 Development of Numerical Simulation Method of Flow Around Automobile Using Meshfree Method 2005-01-0545 A Downforce Optimization Study for a Racing Car Shape
More informationTooth Shape Optimization of the NGW31 Planetary Gear Based on Romax Designer
6th International Conference on Electronics, Mechanics, Culture and Medicine (EMCM 2015) Tooth Shape Optimization of the NGW31 Planetary Gear Based on Romax Designer Chunming Xu 1, a *, Ze Liu 1, b, Wenjun
More informationCollaborative vehicle steering and braking control system research Jiuchao Li, Yu Cui, Guohua Zang
4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 2015) Collaborative vehicle steering and braking control system research Jiuchao Li, Yu Cui, Guohua
More informationDESIGN AND ANALYSIS OF UNDERTRAY DIFFUSER FOR A FORMULA STYLE RACECAR
DESIGN AND ANALYSIS OF UNDERTRAY DIFFUSER FOR A FORMULA STYLE RACECAR Ali Asgar S. Khokhar 1, Suhas S. Shirolkar 2 1 Graduate in Mechanical Engineering, KJ Somaiya College of Engineering, Mumbai, India.
More informationModeling and Simulation of the drive system of elevator based on AMESIM
3rd International Conference on Material, Mechanical and Manufacturing Engineering (IC3ME 2015) Modeling and Simulation of the drive system of elevator based on AMESIM Yingjie Liu 1, 2, a *, Hejun Yu 1,
More informationModal Analysis of Automobile Brake Drum Based on ANSYS Workbench Dan Yang1, 2,Zhen Yu1, 2, Leilei Zhang1, a * and Wentao Cheng2
7th International Conference on Mechatronics, Computer and Education Informationization (MCEI 2017) Modal Analysis of Automobile Brake Drum Based on ANSYS Workbench Dan Yang1, 2,Zhen Yu1, 2, Leilei Zhang1,
More informationNumerical and Experimental Research on Vibration Mechanism of Rotary Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2018 Numerical and Experimental Research on Vibration Mechanism of Rotary Compressor Zhiqiang
More informationKinematics and Force Analysis of Lifting Mechanism of Detachable Container Garbage Truck
Send Orders for Reprints to reprints@benthamscience.net The Open Mechanical Engineering Journal, 014, 8, 19-3 19 Open Access Kinematics and Force Analysis of Lifting Mechanism of Detachable Container Garbage
More informationCFD Investigation of Influence of Tube Bundle Cross-Section over Pressure Drop and Heat Transfer Rate
CFD Investigation of Influence of Tube Bundle Cross-Section over Pressure Drop and Heat Transfer Rate Sandeep M, U Sathishkumar Abstract In this paper, a study of different cross section bundle arrangements
More informationForced vibration frequency response for a permanent magnetic planetary gear
Forced vibration frequency response for a permanent magnetic planetary gear Xuejun Zhu 1, Xiuhong Hao 2, Minggui Qu 3 1 Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System, Yanshan
More informationSIMULATION OF PROPELLER EFFECT IN WIND TUNNEL
SIMULATION OF PROPELLER EFFECT IN WIND TUNNEL J. Červinka*, R. Kulhánek*, Z. Pátek*, V. Kumar** *VZLÚ - Aerospace Research and Test Establishment, Praha, Czech Republic **C-CADD, CSIR-NAL, Bangalore, India
More informationAnalysis of External Aerodynamics of Sedan and Hatch Back Car Models Having Same Frontal Area by Experimental Wind Tunnel Method
Analysis of External Aerodynamics of Sedan and Hatch Back Car Models Having Same Frontal Area by Experimental Wind Tunnel Method 1 Sharath Kumar S N, 2 Dr. C. K. Umesh 1 M.E Scholar, 2 Professor 1,2 Department
More informationA LES/RANS HYBRID SIMULATION OF CANOPY FLOWS
BBAA VI International Colloquium on: Bluff Bodies Aerodynamics & Applications Milano, Italy, July, - 8 A ES/RANS HYBRID SIMUATION OF CANOPY FOWS Satoru Iizuka and Hiroaki Kondo Nagoya University Furo-cho,
More informationChapter 2 Dynamic Analysis of a Heavy Vehicle Using Lumped Parameter Model
Chapter 2 Dynamic Analysis of a Heavy Vehicle Using Lumped Parameter Model The interaction between a vehicle and the road is a very complicated dynamic process, which involves many fields such as vehicle
More informationDevelopment of Rattle Noise Analysis Technology for Column Type Electric Power Steering Systems
TECHNICAL REPORT Development of Rattle Noise Analysis Technology for Column Type Electric Power Steering Systems S. NISHIMURA S. ABE The backlash adjustment mechanism for reduction gears adopted in electric
More informationMODELING SUSPENSION DAMPER MODULES USING LS-DYNA
MODELING SUSPENSION DAMPER MODULES USING LS-DYNA Jason J. Tao Delphi Automotive Systems Energy & Chassis Systems Division 435 Cincinnati Street Dayton, OH 4548 Telephone: (937) 455-6298 E-mail: Jason.J.Tao@Delphiauto.com
More informationSOLUTIONS FOR SAFE HOT COIL EVACUATION AND COIL HANDLING IN CASE OF THICK AND HIGH STRENGTH STEEL
SOLUTIONS FOR SAFE HOT COIL EVACUATION AND COIL HANDLING IN CASE OF THICK AND HIGH STRENGTH STEEL Stefan Sieberer 1, Lukas Pichler 1a and Manfred Hackl 1 1 Primetals Technologies Austria GmbH, Turmstraße
More informationEXPERIMENTAL RESEARCH ON HELICOPTER TAIL SHAKE PHENOMENON
EXPERIMENTAL RESEARCH ON HELICOPTER TAIL SHAKE PHENOMENON Iskandar Shah Ishak, Shuhaimi Mansor, Tholudin Mat Lazim Department of Aeronautical Engineering, Faculty of Mechanical Engineering, Universiti
More informationOptimization of Three-stage Electromagnetic Coil Launcher
Sensors & Transducers 2014 by IFSA Publishing, S. L. http://www.sensorsportal.com Optimization of Three-stage Electromagnetic Coil Launcher 1 Yujiao Zhang, 1 Weinan Qin, 2 Junpeng Liao, 3 Jiangjun Ruan,
More informationFLOW AND HEAT TRANSFER ENHANCEMENT AROUND STAGGERED TUBES USING RECTANGULAR VORTEX GENERATORS
FLOW AND HEAT TRANSFER ENHANCEMENT AROUND STAGGERED TUBES USING RECTANGULAR VORTEX GENERATORS Prabowo, Melvin Emil S., Nanang R. and Rizki Anggiansyah Department of Mechanical Engineering, ITS Surabaya,
More informationResearch on Skid Control of Small Electric Vehicle (Effect of Velocity Prediction by Observer System)
Proc. Schl. Eng. Tokai Univ., Ser. E (17) 15-1 Proc. Schl. Eng. Tokai Univ., Ser. E (17) - Research on Skid Control of Small Electric Vehicle (Effect of Prediction by Observer System) by Sean RITHY *1
More informationFLIGHT TEST RESULTS AT TRANSONIC REGION ON SUPERSONIC EXPERIMENTAL AIRPLANE (NEXST-1)
26 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES FLIGHT TEST RESULTS AT TRANSONIC REGION ON SUPERSONIC EXPERIMENTAL AIRPLANE (NEXST-1) Dong-Youn Kwak*, Hiroaki ISHIKAWA**, Kenji YOSHIDA* *Japan
More informationChapter 2 Analysis on Lock Problem in Frontal Collision for Mini Vehicle
Chapter 2 Analysis on Lock Problem in Frontal Collision for Mini Vehicle Ce Song, Hong Zang and Jingru Bao Abstract To study the lock problem in the frontal collision test on a kind of mini vehicle s sliding
More informationView Numbers and Units
To demonstrate the usefulness of the Working Model 2-D program, sample problem 16.1was used to determine the forces and accelerations of rigid bodies in plane motion. In this problem a cargo van with a
More informationShock tube based dynamic calibration of pressure sensors
Shock tube based dynamic calibration of pressure sensors C. E. Matthews, S. Downes, T.J. Esward, A. Wilson (NPL) S. Eichstädt, C. Elster (PTB) 23/06/2011 1 Outline Shock tube as a basis for calibration
More informationChapter 1: Introduction to Automobile Aerodynamics...1
Preface...xv Acknowledgments...xix Chapter 1: Introduction to Automobile Aerodynamics...1 1.1 Scope... 1 1.1.1 The Role of Aerodynamics in Vehicle Design... 1 1.1.2 The Character of Vehicle Aerodynamics...
More informationThe Improvement Research of the Freight Train Braking System Li-wei QIAO
2017 2nd International Conference on Applied Mechanics and Mechatronics Engineering (AMME 2017) ISBN: 978-1-60595-521-6 The Improvement Research of the Freight Train Braking System Li-wei QIA School of
More informationResearch on Optimization for the Piston Pin and the Piston Pin Boss
186 The Open Mechanical Engineering Journal, 2011, 5, 186-193 Research on Optimization for the Piston Pin and the Piston Pin Boss Yanxia Wang * and Hui Gao Open Access School of Traffic and Vehicle Engineering,
More informationDynamic Responses of Low Medium Speed Maglev Train Simply Supported Beam Interaction System
Urban Rail Transit (2017) 3(3):136 141 DOI 10.1007/s40864-017-0064-2 http://www.urt.cn/ ORIGINAL RESEARCH PAPERS Dynamic Responses of Low Medium Speed Maglev Train Simply Supported Beam Interaction System
More informationWITHOUT MUCH OF A STIR
WITHOUT MUCH OF A STIR The Train of the Future is Light and Fast and, Above All, Safe By Sigfried Loose S afely operating rail vehicles means taking numerous components into consideration. The vehicle
More informationFuzzy based Adaptive Control of Antilock Braking System
Fuzzy based Adaptive Control of Antilock Braking System Ujwal. P Krishna. S M.Tech Mechatronics, Asst. Professor, Mechatronics VIT University, Vellore, India VIT university, Vellore, India Abstract-ABS
More informationDynamic characteristics of railway concrete sleepers using impact excitation techniques and model analysis
Dynamic characteristics of railway concrete sleepers using impact excitation techniques and model analysis Akira Aikawa *, Fumihiro Urakawa *, Kazuhisa Abe **, Akira Namura * * Railway Technical Research
More informationImprovement of Vehicle Dynamics by Right-and-Left Torque Vectoring System in Various Drivetrains x
Improvement of Vehicle Dynamics by Right-and-Left Torque Vectoring System in Various Drivetrains x Kaoru SAWASE* Yuichi USHIRODA* Abstract This paper describes the verification by calculation of vehicle
More informationOptimization of Scissor-jack-Damper s Parameters and Performance under the Constrain of Human Comfort
Optimization of Scissor-jack-Damper s Parameters and Performance under the Constrain of Human Comfort *Xin ZHAO 1) and Zhuang MA 2) 1) Tongji Architectural Design(Group) Co.,Ltd.,Shanghai,China 2) Department
More informationABSTRACT INTRODUCTION
Wind tunnel investigation of waste air re-entry with wall ventilation P. Broas Technical Research Centre of Finland, Ship Laboratory, Tekniikantie 12, SF-02150, Espoo, Finland ABSTRACT A wind tunnel investigation
More informationCOMPRESSIBLE FLOW ANALYSIS IN A CLUTCH PISTON CHAMBER
COMPRESSIBLE FLOW ANALYSIS IN A CLUTCH PISTON CHAMBER Masaru SHIMADA*, Hideharu YAMAMOTO* * Hardware System Development Department, R&D Division JATCO Ltd 7-1, Imaizumi, Fuji City, Shizuoka, 417-8585 Japan
More informationStudy on Braking Energy Recovery of Four Wheel Drive Electric Vehicle Based on Driving Intention Recognition
Open Access Library Journal 2018, Volume 5, e4295 ISSN Online: 2333-9721 ISSN Print: 2333-9705 Study on Braking Energy Recovery of Four Wheel Drive Electric Vehicle Based on Driving Intention Recognition
More informationThe Modeling and Simulation of DC Traction Power Supply Network for Urban Rail Transit Based on Simulink
Journal of Physics: Conference Series PAPER OPEN ACCESS The Modeling and Simulation of DC Traction Power Supply Network for Urban Rail Transit Based on Simulink To cite this article: Fang Mao et al 2018
More informationTesting Of Fluid Viscous Damper
Testing Of Fluid Viscous Damper Feng Qian & Sunwei Ding, Jingjing Song Shanghai Research Institute of Materials, China Dr. Chien-Chih Chen US.VF Corp, Omni Device, China SUMMARY: The Fluid Viscous Damper
More informationSTIFFNESS CHARACTERISTICS OF MAIN BEARINGS FOUNDATION OF MARINE ENGINE
Journal of KONES Powertrain and Transport, Vol. 23, No. 1 2016 STIFFNESS CHARACTERISTICS OF MAIN BEARINGS FOUNDATION OF MARINE ENGINE Lech Murawski Gdynia Maritime University, Faculty of Marine Engineering
More informationDrag Characteristics of a Pickup Truck according to the Bed Geometry
Proceedings of the th IASME/WSEAS International Conference on FLUID MECHANICS and AERODYNAMICS Drag Characteristics of a Pickup Truck according to the Geometry JONGSOO HA, SHIGERU OBAYASHI, and YASUAKI
More information2292. Numerical computation of aerodynamic noises of the high speed train with considering pantographs
2292. Numerical computation of aerodynamic noises of the high speed train with considering pantographs Ya-hui Wang 1, Jian-ting Wang 2, Liu-qiang Fu 3 North China University of Water Resources and Electric
More informationMETHOD FOR TESTING STEERABILITY AND STABILITY OF MILITARY VEHICLES MOTION USING SR60E STEERING ROBOT
Journal of KONES Powertrain and Transport, Vol. 18, No. 1 11 METHOD FOR TESTING STEERABILITY AND STABILITY OF MILITARY VEHICLES MOTION USING SR6E STEERING ROBOT Wodzimierz Kupicz, Stanisaw Niziski Military
More informationVibration Analysis of Gear Transmission System in Electric Vehicle
Advanced Materials Research Online: 0-0- ISSN: 66-8985, Vols. 99-00, pp 89-83 doi:0.408/www.scientific.net/amr.99-00.89 0 Trans Tech Publications, Switzerland Vibration Analysis of Gear Transmission System
More informationKey Parameters Investigation on Small Cycle Fuel Injection Quantity for a Diesel Engine Electronic Unit Pump System
Page63 EVS25 Shenzhen, China, Nov 5-9, 21 Key Parameters Investigation on Small Cycle Fuel Injection Quantity for a Diesel Engine Electronic Unit Pump System Abstract Liyun Fan 1, Bingqi Tian 1, and Xiuzhen
More informationDynamic performance of flow control valve using different models of system identification
Dynamic performance of flow control valve using different models of system identification Ho Chang, Po-Kai Tzenog and Yun-Min Yeh Department of Mechanical Engineering, National Taipei University of Technology
More informationTHE LONGITUDINAL VIBRATION OF COMPOSITE DRIVE SHAFT
THE LONGITUDINAL VIBRATION OF COMPOSITE DRIVE SHAFT Tongtong Zhang, Yongsheng Li, Weibo Wang National Key Laboratory on Ship Vibration and Noise, China Ship Scientific Research Centre, Wuxi, China email:
More informationOptimization of Hydraulic Retarder Based on CFD Technology
International Conference on Manufacturing Science and Engineering (ICMSE 2015) Optimization of Hydraulic Retarder Based on CFD Technology Li Hao 1, a *, Ren Xiaohui 1,b 1 College of Vehicle and Energy,
More informationGauge Face Wear Caused with Vehicle/Track Interaction
Gauge Face Wear Caused with Vehicle/Track Interaction Makoto ISHIDA*, Mitsunobu TAKIKAWA, Ying JIN Railway Technical Research Institute 2-8-38 Hikari-cho, Kokubunji-shi, Tokyo 185-8540, Japan Tel: +81-42-573-7291,
More informationAnsys-CFX Analysis on a Hatch-Back Car with Wheels and without Wheels
ISSN (ONLINE): 2321-3051 INTERNATIONAL JOURNAL OF RESEARCH IN AERONAUTICAL AND MECHANICAL ENGINEERING Ansys-CFX Analysis on a Hatch-Back Car with Wheels and without Wheels Roopsandeep Bammidi 1, Dr.B.V.Ramana
More informationModeling of 17-DOF Tractor Semi- Trailer Vehicle
ISSN 2395-1621 Modeling of 17-DOF Tractor Semi- Trailer Vehicle # S. B. Walhekar, #2 D. H. Burande 1 sumitwalhekar@gmail.com 2 dhburande.scoe@sinhgad.edu #12 Mechanical Engineering Department, S.P. Pune
More informationNUMERICAL ANALYSIS OF IMPACT BETWEEN SHUNTING LOCOMOTIVE AND SELECTED ROAD VEHICLE
Journal of KONES Powertrain and Transport, Vol. 21, No. 4 2014 ISSN: 1231-4005 e-issn: 2354-0133 ICID: 1130437 DOI: 10.5604/12314005.1130437 NUMERICAL ANALYSIS OF IMPACT BETWEEN SHUNTING LOCOMOTIVE AND
More informationCHAPTER 4 : RESISTANCE TO PROGRESS OF A VEHICLE - MEASUREMENT METHOD ON THE ROAD - SIMULATION ON A CHASSIS DYNAMOMETER
CHAPTER 4 : RESISTANCE TO PROGRESS OF A VEHICLE - MEASUREMENT METHOD ON THE ROAD - SIMULATION ON A CHASSIS DYNAMOMETER 1. Scope : This Chapter describes the methods to measure the resistance to the progress
More informationInvestigation on the Detrimental Wavelength of Track Irregularity for the Suspended Monorail Vehicle System
First International Conference on Rail Transportation Chengdu, China, July 10-1, 017 Investigation on the Detrimental Wavelength of Track Irregularity for the Suspended Monorail Vehicle System Zhihui Chen
More informationStudy of intake manifold for Universiti Malaysia Perlis automotive racing team formula student race car
Journal of Physics: Conference Series PAPER OPEN ACCESS Study of intake manifold for Universiti Malaysia Perlis automotive racing team formula student race car To cite this article: A Norizan et al 2017
More informationPulsation dampers for combustion engines
ICLASS 2012, 12 th Triennial International Conference on Liquid Atomization and Spray Systems, Heidelberg, Germany, September 2-6, 2012 Pulsation dampers for combustion engines F.Durst, V. Madila, A.Handtmann,
More informationAnalysis on natural characteristics of four-stage main transmission system in three-engine helicopter
Article ID: 18558; Draft date: 2017-06-12 23:31 Analysis on natural characteristics of four-stage main transmission system in three-engine helicopter Yuan Chen 1, Ru-peng Zhu 2, Ye-ping Xiong 3, Guang-hu
More informationTURBOGENERATOR DYNAMIC ANALYSIS TO IDENTIFY CRITICAL SPEED AND VIBRATION SEVERITY
U.P.B. Sci. Bull., Series D, Vol. 77, Iss. 3, 2015 ISSN 1454-2358 TURBOGENERATOR DYNAMIC ANALYSIS TO IDENTIFY CRITICAL SPEED AND VIBRATION SEVERITY Claudiu BISU 1, Florian ISTRATE 2, Marin ANICA 3 Vibration
More informationTransmission Error in Screw Compressor Rotors
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2008 Transmission Error in Screw Compressor Rotors Jack Sauls Trane Follow this and additional
More informationStatic and Dynamic Strength Analysis on Rear Axle of Small Payload Off-highway Dump Trucks
Static and Dynamic Strength Analysis on Rear Axle of Small Payload Off-highway Dump Trucks Ji-xin Wang, Guo-qiang Wang, Shi-kui Luo, Dec-heng Zhou College of Mechanical Science and Engineering, Jilin University,
More informationFLUID FLOW. Introduction
FLUID FLOW Introduction Fluid flow is an important part of many processes, including transporting materials from one point to another, mixing of materials, and chemical reactions. In this experiment, you
More informationParametric Study on Flow and Heat Transfer Performance of Multi-Flow Spiral-Wound Heat Exchanger
319 A publication of CHEMICAL ENGINEERING TRANSACTIONS VOL. 39, 2014 Guest Editors: Petar Sabev Varbanov, Jiří Jaromír Klemeš, Peng Yen Liew, Jun Yow Yong Copyright 2014, AIDIC Servizi S.r.l., ISBN 978-88-95608-30-3;
More informationPreliminary Design of a LSA Aircraft Using Wind Tunnel Tests
Preliminary Design of a LSA Aircraft Using Wind Tunnel Tests Norbert ANGI*,1, Angel HUMINIC 1 *Corresponding author 1 Aerodynamics Laboratory, Transilvania University of Brasov, 29 Bulevardul Eroilor,
More informationCFD analysis on the aerodynamics characteristics of Jakarta-Bandung high speed train
CFD analysis on the aerodynamics characteristics of Jakarta-Bandung high speed train Tony Utomo 1,*, Berkah Fajar 1, and Hendry Arpriyanto 2 1 Mechanical Engineering Department, Faculty of Engineering,
More informationINVESTIGATION OF HEAT TRANSFER CHARACTERISTICS OF CIRCULAR AND DIAMOND PILLARED VANE DISC BRAKE ROTOR USING CFD
SDRP JOURNAL OF NANOTECHNOLOGY & MATERIAL SCIENCE. INVESTIGATION OF HEAT TRANSFER CHARACTERISTICS OF CIRCULAR AND DIAMOND PILLARED VANE DISC BRAKE ROTOR USING CFD Research AUTHOR: A.RAJESH JUNE 2017 1
More informationInfluence of Coupler and Buffer on Dynamics Performance of Heavy Haul Locomotive
Send Orders for Reprints to reprints@benthamscience.ae The Open Mechanical Engineering Journal, 215, 9, 133-138 133 Open Access Influence of Coupler and Buffer on Dynamics Performance of Heavy Haul Locomotive
More informationShimmy Identification Caused by Self-Excitation Components at Vehicle High Speed
Shimmy Identification Caused by Self-Excitation Components at Vehicle High Speed Fujiang Min, Wei Wen, Lifeng Zhao, Xiongying Yu and Jiang Xu Abstract The chapter introduces the shimmy mechanism caused
More informationClearance Loss Analysis in Linear Compressor with CFD Method
Clearance Loss Analysis in Linear Compressor with CFD Method Wenjie Zhou, Zhihua Gan, Xiaobin Zhang, Limin Qiu, Yinzhe Wu Cryogenics Laboratory, Zhejiang University Hangzhou, Zhejiang, China, 310027 ABSTRACT
More informationMEASUREMENTS OF VIBRATION AMPLITUDE AND IMPACT FORCE IN 2M SHOCK TUNNEL
MEASUREMENTS OF VIBRATION AMPLITUDE AND IMPACT FORCE IN 2M SHOCK TUNNEL Lu Zhi-guo 1,2, Li Guo-jun 1, Luo yicheng 2, Jiang Hua 2, Yu Shi-en 2, Zhong Yong 2 ABSTRACT This paper describes the primary study
More informationAnalysis of Torsional Vibration in Elliptical Gears
The The rd rd International Conference on on Design Engineering and Science, ICDES Pilsen, Czech Pilsen, Republic, Czech August Republic, September -, Analysis of Torsional Vibration in Elliptical Gears
More informationTHE SIMULATION OF ONE SIDE OF TETRAHEDRON AIRBAGS IMPACT ATTENUATION SYSTEM
THE SIMULATION OF ONE SIDE OF TETRAHEDRON AIRBAGS IMPACT ATTENUATION SYSTEM Zhuo Wu (1) (1) Beijing Institution of Space Mechanics and Electrics, PB-9201-3, Beijing, China, Email:wuzhuo82@gmail.com ABSTRACT
More informationSimulating Rotary Draw Bending and Tube Hydroforming
Abstract: Simulating Rotary Draw Bending and Tube Hydroforming Dilip K Mahanty, Narendran M. Balan Engineering Services Group, Tata Consultancy Services Tube hydroforming is currently an active area of
More informationVariable Valve Drive From the Concept to Series Approval
Variable Valve Drive From the Concept to Series Approval New vehicles are subject to ever more stringent limits in consumption cycles and emissions. At the same time, requirements in terms of engine performance,
More informationCOMPUTATIONAL ANALYSIS OF TWO DIMENSIONAL FLOWS ON A CONVERTIBLE CAR ROOF ABDULLAH B. MUHAMAD NAWI
COMPUTATIONAL ANALYSIS OF TWO DIMENSIONAL FLOWS ON A CONVERTIBLE CAR ROOF ABDULLAH B. MUHAMAD NAWI Report submitted in partial of the requirements for the award of the degree of Bachelor of Mechanical
More information