EFFECTIVE SOLUTIONS FOR SHOCK AND VIBRATION CONTROL
|
|
- Candace Lang
- 5 years ago
- Views:
Transcription
1 EFFECTIVE SOLUTIONS FOR SHOCK AND VIBRATION CONTROL Part 1 Alan Klembczyk TAYLOR DEVICES, INC. North Tonawanda, NY Part 2 Herb LeKuch Shocktech / 901D Monsey, NY SAVIAC Tutorial 2009
2 Part 1 OUTLINE Introduction - Brief Description Isolation - Types of Isolation Systems - Photos - Case Study of Effective Shock and Vibration Isolation Damping - Types of Damping Systems - Pictures and Videos of Damping Applications Shock Absorbing - Key Points - Photos - Videos
3 Shock and Vibration Isolators Shock Absorbers Dampers
4 Isolators, Shock Absorbers and Dampers all remove harmful energy from a dynamic system Isolators: Dampers: Absorbers: De-couple, or isolate to some degree, the input energy from a protected mass or structure. Some energy does get through, but isolator parameters are optimized to reduce the response to acceptable levels. Doesn t necessarily absorb a maximum amount of energy, but attempts to remove the input as much as possible. Continuously remove energy from a moving system to control its response. Absorb a maximum amount of kinetic energy, and bring a moving mass to a stop with minimal force.
5 The design of a system subjected to shock and vibration can be greatly improved by the addition of isolators, dampers, or shock absorbers Improvement Areas Include: - Reduced Response Acceleration - Reduced Deflection and Stress - Reduced Weight - Improved Bio-dynamics - Longer Fatigue Life - Architectural Enhancement - Reduced Cost
6 Isolation
7 TRANSIENT SHOCK RESPONSE Potential improvements from added isolation... Combining springs and dampers into a practical Combining springs and dampers into a practical shock isolator can often reduce stress and deflection by up to 95%, provided that sufficient rattle space is provided.
8 ISOLATION SYSTEM DEFINITIONS Passive System ~ Isolation system component parameters do not change with varying input. Adaptive ~ Component parameters can be adjusted manually or electronically to adjust the passive parameters. Also include systems that mechanically react to varying input. Semi-Active ~ Parameters change based on input from a sensing element but do not drive the system with internal power. Fully Active ~ React to varying input, change parameters accordingly, and drive the isolated mass with an internal power system according to control algorithms.
9 SHOCK ISOLATORS ~ SPRING ELEMENTS Mechanical-Coil, Leaf, Wire Rope ~ Advantages: Low cost, long life Disadvantages: Bulky, large sizes unavailable Elastomer-Tube, Block, Shear, Strap ~ Advantages: Low cost, moderate life Disadvantages: Temperature sensitive, not manufactured in large sizes Pneumatic ~ Advantages: Disadvantages: Compact, moderate life Temperature sensitive, difficult to seal in large sizes
10 SHOCK ISOLATORS ~ SPRING ELEMENTS CONTINUED Liquid ~ Advantages: Disadvantages: Very compact, moderate life, easy to incorporate damping Temperature sensitive, requires high-strength steel, somewhat expensive Machined-Helical, Cantilever ~ Advantages: Disadvantages: Very compact, can be made in any size, has almost zero damping Expensive
11 MECHANICAL ARRANGMENT OF SPRING ELEMENTS Un-Centered ~ Displacement changes with load like an auto suspension Soft Centering ~ One spring element is used to precompress a second spring element to mid-stroke Hard Centering ~ Spring is loaded by a mechanism to provide a re-centering force in either direction from center. The hard centering force is usually 2-4 Gs
12
13 FOR TRANSIENT SHOCKS If pulse is well known, minimum G s or deflection results from large amounts of damping more than 40% critical. If pulse is not well known, the least risk design will have 25% critical.
14 FOR TRANSIENT SHOCKS Oftentimes requires a full shock analysis and optimization procedure for defining isolation system parameters. Most optimization is iterative. Optimization will define isolation attributes such as stroke (travel), frequency (spring rate), damping level, and preload, if any.
15 FOR HIGH FREQUENCY VIBRATIONS Specialty damper designs exist that roll-off their output from a true linear damper. In some simple cases, just mounting the damper with soft mounts can provide some roll-off.
16 Good Vibration Isolation System Bad Vibration Isolation System
17 No System Friction Analytical Predictions Small Amount of Friction
18 Useful Equations PSD Power Spectral Density G rms ( PSD )( Frequency ) db logtr(20) TR ( transmissibility ) G response G input
19
20
21 Vibration Isolation Mount
22
23
24
25 Case Study of Effective Shock and Vibration Isolation
26 Mobile Launch Platform (MLP)
27 DYNAMIC SYSTEM BREAKDOWN Three main phases: 1. Define the dynamic environment that exists. 2. Define the fragility level of the equipment. 3. Determine whether or not mitigation through isolation or other means is necessary. Isolation system parameters required to be defined through analysis or test as necessary.
28 DYNAMIC ENVIRONMENT Defined by direct measurement. - Response during launch of the floor of the MLP was captured using accelerometers in the vertical direction during a recent Shuttle mission. - This response was then converted into the form of a Power Spectral Density, PSD. - This data was to be used as the input to which p the system was to be analyzed.
29 ANALYTICAL MODEL Provided preliminary estimate. PSD Input. - Recorded input in vertical direction only. - Assumed equivalent in all three orthogonal directions. PSD Input g 2 /Hz 0.01 Original Scaled Frequency (Hz)
30 Switchgear Analytical Response Switchgear Response at Center of Gravity: Y-Direction g 2 /Hz) PSD ( 1.00E E E E E E E E E E MOD TRANS Frequency (Hz)
31 Damper Spring Assembly
32 STS-115 Shuttle Launch September 9, 2006
33 STS-117 Shuttle Launch June 8, 2007
34 Z-Direction STS-117 Launch Maximum G-Force in Z-direction Side A Base G-Forc ce Z Maximum Change in G Force Percentage Maximum Minimum 71.32% 70.35% 73.44% 77.17% Minimum Side A Struct. t Side B Base Side B Struct.
35 Input / Response Summary X Y Z Input Response Change in G-Force Percentage Maximum Minimum Maximum Minimum Maximum Minimum % 72.71% % 74.25% % 62.87% % 54.03% % 70.35% % 77.17%
36 Damping Systems
37 TYPES OF DAMPING DEVICES SELECTION CRITERIA When utilizing ing a damping device, one must have the following: 1. The exact output function of the damper over the entire anticipated translational velocity range 2. All environmental aspects of the application, and how these will affect damper performance 3. A software code that can accurately model the anticipated non-linearities and environmental performance shifts of the damping device
38 HOW MUCH DAMPING CAN BE USED? 1. Most structures have inherent damping of 1% 5% of critical 2. Automotive suspensions have fluid dampers of 20% 25% critical 3. Truck suspensions have fluid dampers of 30% 40% critical 4. Damping of 50% critical will prevent amplification in a structure subjected to forced resonance 5 Military applications often use damping up to 2000% of critical to 5. Military applications often use damping up to 2000% of critical to suppress weapons shock when used in an isolation system
39 TYPES OF DAMPING DEVICES 1. Structural 2. Coulomb Friction 3. Elastomer 4. Active Drivers 5. Passive Hydraulic 6. Semi-Active Hydraulic 7. Tuned Mass Dampers
40 Frequently Used Equations C cr 2 ω m ω natural frequency ( ω 2 π ( frequency) C cr 2 km k m 2 x acceleration rad sec )
41 Structural Damping ~ 1. Inherent in a structure, not inherent in a mechanism 2. Magnitude varies widely with the design of the structure and construction tolerances thereof 3. Can be as low as 0.5% critical for a rigid structure 4. Can be as high as 10% critical for massive structures having lightweight construction and complex joints
42 Passive Hydraulic Damping ~ Modern dampers achieve much different outputs t than the classical case. These outputs are optimized for performance in systems subjected to a highly variable pulse field, those that are real world in nature. In general, an ideal damper has an output that is completely out of phase with structural bending and shear stresses. This allows the damper to reduce both stress and deflection, simultaneously
43 CURRENT TYPES ~ PASSIVE HYDRAULIC DAMPERS 1. Fluidic Uses specifically shaped orifice to achieve output characteristics ranging from: F = CV^0.4 to F = CV^2 2. Pressure Responsive Valve Uses Multiple spring loaded poppet valves: F = CV^0.2 to F = CV^ Metering Tube Uses a piston which progressively covers a series of ports output is: F = CV^2*f(x) This design is effective only when tuned for a specific pulse signature 4 Metering Pin Similar to metering tube but orifice is 4. Metering Pin Similar to metering tube, but orifice is continuously varied
44 TEST RESULTS Let s consider some tests by MCEER with a complex seismic input into a structure, with added dampers. In this case, the seismic pulse field indicated that a linear damper, F = CV, was a best fit
45 1-Story, No Dampers, El Centro 33.33% Total Damping = 2%
46 1-Story, 2 Dampers, El Centro 100% Total Damping = 22%
47
48
49
50
51
52
53
54
55
56
57
58 Tuned Mass Damping ~ A suspended mass set near the natural frequency of the structure that oscillates out of phase with the structure to effectively damp the response of the structure to external influences Advantages: Disadvantages: Relatively easy to incorporate and install into one location within a structure Works only at one frequency and provides only limited damping
59
60 Tuned Mass Damper
61
62 Effective Damping from TMD
63
64
65
66
67 Performed a Fourier Transform to convert Performed a Fourier Transform to convert data from time based to frequency based
68
69
70 Shock Absorbers (Kinetic Energy Killers)
71 Squaring the curve technique for the worst motion of a transient F Ideal Constant Force Response Damping Force Spring Force a. Determine how damping must vary with displacement during this discrete cycle b. Obtain data for velocity across damper at various values of X c. You now have an idealized damping function, where: F 0 =f f(v) X
72 Useful Equations mv KE Energy Kinetic 1 ) ( 2 x F DE Energy Driving gy ) ( ) ( ) ( 2 ) ( TE Force Absorber DE KE TE Energy Total ) ( Force Absorber G s Factor Efficiency Stroke Force Absorber ' ) )( ( Mass of Weight s G '
73 The most efficient shock absorber reacts with constant t force over its entire stroke for a given input. For a system with varying velocity input, a V 2 damper works best as long as the F vs. X curve remains square. Why? Force should vary with velocity the same way that energy does. Machines and mechanical systems are usually optimized with minimal acceleration. However,... people like minimal jerk (X). People have an efficient active/semi-active isolation system in how they react to impulses.
74 Typical Output Curve
75
76
77 CONCLUSIONS 1. Isolation, damping and shock absorbing systems are very useful tools in the world of shock and vibration. 2. These are complex tools and no manuals are available. Thus, a close relationship with suppliers should be established for optimal use of the technology. 3. It is essential that the analyst and system engineer be equipped with a full database of isolation system attributes that have been proven effective and reliable in a wide variety of shock and vibration isolation applications in the past.
Alan R. Klembczyk, Chief Engineer Taylor Devices, Inc. North Tonawanda, NY
SIMULATION, DEVELOPMENT, AND FIELD MEASUREMENT VALIDATION OF AN ISOLATION SYSTEM FOR A NEW ELECTRONICS CABINET IN THE SPACE SHUTTLE LAUNCH ENVIRONMENT WITHIN THE MOBILE LAUNCH PLATFORM Alan R. Klembczyk,
More informationIMPACT REGISTER, INC. PRECISION BUILT RECORDERS SINCE 1914
IMPACT REGISTER, INC. PRECISION BUILT RECORDERS SINCE 1914 RM-3WE (THREE WAY) ACCELEROMETER GENERAL The RM-3WE accelerometer measures and permanently records, for periods of 30, 60, and 90 days, the magnitude,
More informationCHAPTER 6 MECHANICAL SHOCK TESTS ON DIP-PCB ASSEMBLY
135 CHAPTER 6 MECHANICAL SHOCK TESTS ON DIP-PCB ASSEMBLY 6.1 INTRODUCTION Shock is often defined as a rapid transfer of energy to a mechanical system, which results in a significant increase in the stress,
More informationUSING STANDARD ISOLATORS TO CONTROL UNWANTED MACHINE VIBRATION
USING STANDARD ISOLATORS TO CONTROL UNWANTED MACHINE VIBRATION From small medical pumps to large diesel engines, vibration is unavoidable and dangerous if left unchecked in rotating and oscillating machinery.
More informationMECHANICAL EQUIPMENT. Engineering. Theory & Practice. Vibration & Rubber Engineering Solutions
MECHANICAL EQUIPMENT Engineering Theory & Practice Vibration & Rubber Engineering Solutions The characteristic of an anti-vibration mounting that mainly determines its efficiency as a device for storing
More informationIsolators. F D = C Ẋ α. The concepts of isolation system can be best understood by presenting damper design first, followed by the isolation systems.
Isolators The concepts of isolation system can be best understood by presenting damper design first, followed by the isolation systems. 1. DAMPER TYPES A conventional high performance fluid damper is depicted
More informationReduction of Self Induced Vibration in Rotary Stirling Cycle Coolers
Reduction of Self Induced Vibration in Rotary Stirling Cycle Coolers U. Bin-Nun FLIR Systems Inc. Boston, MA 01862 ABSTRACT Cryocooler self induced vibration is a major consideration in the design of IR
More informationDesign and Application of Vibration Suppression
Design and Application of Vibration Suppression Excessive vibration can be detrimental to the structural integrity of structures or can adversely affect the performance of instruments such as telescopes
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 informationCHAPTER 4: EXPERIMENTAL WORK 4-1
CHAPTER 4: EXPERIMENTAL WORK 4-1 EXPERIMENTAL WORK 4.1 Preamble 4-2 4.2 Test setup 4-2 4.2.1 Experimental setup 4-2 4.2.2 Instrumentation, control and data acquisition 4-4 4.3 Hydro-pneumatic spring characterisation
More informationtest with confidence HV Series TM Test Systems Hydraulic Vibration
test with confidence HV Series TM Test Systems Hydraulic Vibration Experience. Technology. Value. The Difference. HV Series TM. The Difference. Our philosophy is simple. Provide a system designed for optimum
More informationShock Absorbers What is Ride Control Vehicle Dynamics Suspension System Shock Absorbers Struts Terminology
Home Tech Support Shock Absorbers Shock Absorbers What is Ride Control Vehicle Dynamics Suspension System Shock Absorbers Struts Terminology A BRIEF HISTORY These first shock absorbers were simply two
More informationSTRUCTURAL CONTROL USING HYBRID SPRING-DAMPER ISOLATOR WITH INTEGRAL GAPPING FUNCTION
STRUCTURAL CONTROL USING HYBRID SPRING-DAMPER ISOLATOR WITH INTEGRAL GAPPING FUNCTION by Douglas P. Taylor, President John Metzger, Engineering Manager - Special Projects Donald Horne, Design Engineer
More informationStorvik HAL Compactor
Storvik HAL Compactor Gunnar T. Gravem 1, Amund Bjerkholt 2, Dag Herman Andersen 3 1. Position, Senior Vice President, Storvik AS, Sunndalsoera, Norway 2. Position, Managing Director, Heggset Engineering
More informationMECHATRONICS LAB MANUAL
MECHATRONICS LAB MANUAL T.E.(Mechanical) Sem-VI Department of Mechanical Engineering SIESGST, Nerul, Navi Mumbai LIST OF EXPERIMENTS Expt. No. Title Page No. 1. Study of basic principles of sensing and
More informationACOCAR active suspension
ACOCAR active suspension Bert Vandersmissen Vehicle Dynamics Expo Stuttgart, 07/05/2008 Contents Introduction Active suspension hardware Quarter car test rig Skyhook quarter car control Experimental skyhook
More informationAPS 420 ELECTRO-SEIS Long Stroke Shaker with Linear Ball Bearings Page 1 of 5
Long Stroke Shaker with Linear Ball Bearings Page 1 of 5 The APS 420 ELECTRO-SEIS shaker is a long stroke, electrodynamic force generator specifically designed to be used alone or in arrays for studying
More informationDetermination of anti pitch geometry. acceleration [1/3]
1of 39 Determination of anti pitch geometry Similar to anti squat Opposite direction of D Alembert s forces. acceleration [1/3] Front wheel forces and effective pivot locations 2of 39 Determination of
More informationModeling and Vibration Analysis of a Drum type Washing Machine
Modeling and Vibration Analysis of a Drum type Washing Machine Takayuki KOIZUMI, Nobutaka TSUJIUCHI, Yutaka NISHIMURA Department of Engineering, Doshisha University, 1-3, Tataramiyakodani, Kyotanabe, Kyoto,
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 informationFEASIBILITY STYDY OF CHAIN DRIVE IN WATER HYDRAULIC ROTARY JOINT
FEASIBILITY STYDY OF CHAIN DRIVE IN WATER HYDRAULIC ROTARY JOINT Antti MAKELA, Jouni MATTILA, Mikko SIUKO, Matti VILENIUS Institute of Hydraulics and Automation, Tampere University of Technology P.O.Box
More informationAir Bearing Shaker for Precision Calibration of Accelerometers
Air Bearing Shaker for Precision Calibration of Accelerometers NOMENCLATURE Jeffrey Dosch PCB Piezotronics 3425 Walden Avenue, Depew NY DUT Device Under Test S B DUT sensitivity to magnetic field [(m/sec
More informationAPS 113 ELECTRO-SEIS Long Stroke Shaker with Linear Ball Bearings Page 1 of 5
Long Stroke Shaker with Linear Ball Bearings Page 1 of 5 The ELECTRO-SEIS shaker is a long stroke, electrodynamic force generator specifically designed to be used alone or in arrays for studying dynamic
More informationVALDYN 1-D Crankshaft modelling
VALDYN 1-D Crankshaft modelling Tutorial www.ricardo.com 2 Contents Introduction Crankshaft torsional (1-D) modelling Crankshaft torsional analysis Crankshaft data Build model Define output plots Define
More informationExperimental Investigation of Effects of Shock Absorber Mounting Angle on Damping Characterstics
Experimental Investigation of Effects of Shock Absorber Mounting Angle on Damping Characterstics Tanmay P. Dobhada Tushar S. Dhaspatil Prof. S S Hirmukhe Mauli P. Khapale Abstract: A shock absorber is
More informationModeling tire vibrations in ABS-braking
Modeling tire vibrations in ABS-braking Ari Tuononen Aalto University Lassi Hartikainen, Frank Petry, Stephan Westermann Goodyear S.A. Tag des Fahrwerks 8. Oktober 2012 Contents 1. Introduction 2. Review
More informationVALMONT MITIGATOR TR1
VALMONT MITIGATOR TR1 Research Verification of the Valmont TR1 Damper Performance MITIGATOR TR1 VIBRATION DAMPER The Valmont TR1 damper has been specifically designed using vibration theory and innovative
More informationDamping Loss Factor for Damping Materials for Continuous Structures
Damping Loss Factor for Damping Materials for Continuous Structures P. H. Mathuria and U. P. Kulkarni mathuria@usa.net unmeshkulkarni@mailcity.com ABSTRACT The half power bandwidth method is used for measuring
More informationDESIGN AND ANALYSIS OF PUSH ROD ROCKER ARM SUSPENSION USING MONO SPRING
Volume 114 No. 9 2017, 465-475 ISSN: 1311-8080 (printed version); ISSN: 1314-3395 (on-line version) url: http://www.ijpam.eu ijpam.eu DESIGN AND ANALYSIS OF PUSH ROD ROCKER ARM SUSPENSION USING MONO SPRING
More informationVehicle Dynamic Simulation Using A Non-Linear Finite Element Simulation Program (LS-DYNA)
Vehicle Dynamic Simulation Using A Non-Linear Finite Element Simulation Program (LS-DYNA) G. S. Choi and H. K. Min Kia Motors Technical Center 3-61 INTRODUCTION The reason manufacturers invest their time
More informationDESIGN AND ANALYSIS OF A SHOCK ABSORBER Rohit Verma CADD CENTRE,AGRA
DESIGN AND ANALYSIS OF A SHOCK ABSORBER Rohit Verma CADD CENTRE,AGRA Abstract A shock absorber or suspension system is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic
More informationEXPERIENCE AND PRACTICAL CONSIDERATIONS IN THE DESIGN OF VISCOUS DAMPERS
EXPERIENCE AND PRACTICAL CONSIDERATIONS IN THE DESIGN OF VISCOUS DAMPERS Philippe Duflot Civil Engineer Taylor Devices Europe Brussels, BE Doug Taylor President Taylor Devices Inc North Tonawanda, USA
More informationPractical Issues Concerning Dispensing End Effectors Time Pressure
Practical Issues Concerning Dispensing End Effectors By Doug Dixon, Joel Kazalski, Frank Murch and Steve Marongelli Universal Instruments Corporation General Dispensing Module Group PO Box 825 Binghamton,
More informationCHAPTER 1 BALANCING BALANCING OF ROTATING MASSES
CHAPTER 1 BALANCING Dynamics of Machinery ( 2161901) 1. Attempt the following questions. I. Need of balancing II. Primary unbalanced force in reciprocating engine. III. Explain clearly the terms static
More informationStructural Dynamic Behaviour of Tyres
XIX CNIM 15-16/11 Castellón Structural Dynamic Behaviour of Tyres Paul Sas Noise & Vibration Engineering Research Group KU.Leuven, Dept. Mechanical Engineering, Div. PMA Road traffic noise Vehicle noise:
More informationUsing Kinetic Energy for Plunger Lift Safety and Maintenance
Gas Well Deliquification Workshop Sheraton Hotel, February 20 22, 2017 Using Kinetic Energy for Plunger Lift Safety and Maintenance Mark Scantlebury, President and CEO Extreme Telematics Corp. THE CHANGING
More informationChapter 2. Background
Chapter 2 Background The purpose of this chapter is to provide the necessary background for this research. This chapter will first discuss the tradeoffs associated with typical passive single-degreeof-freedom
More informationThe Shock Absorber Handbook Second Edition
The Shock Absorber Handbook Second Edition John C. Dixon, Ph.D, F.I.Mech.E., F.R.Ae.S. Senior Lecturer in Engineering Mechanics The Open University, Great Britain IICIUTIHHIIL BICINTINNIIM. John Wiley
More informationFig.1 Sky-hook damper
1. Introduction To improve the ride comfort of the Maglev train, control techniques are important. Three control techniques were introduced into the Yamanashi Maglev Test Line vehicle. One method uses
More informationLoaded Car Hunting and Suspension Systems
Loaded Car Hunting Mechanical Association Railcar Technical Services Loaded Car Hunting and Suspension Systems 18 September 2009 Jay P. Monaco Vice President Engineering Amsted Rail Company, Inc. Loaded
More informationA Comparison of the Effectiveness of Elastomeric Tuned Mass Dampers and Particle Dampers
003-01-1419 A Comparison of the Effectiveness of Elastomeric Tuned Mass Dampers and Particle Dampers Copyright 001 Society of Automotive Engineers, Inc. Allan C. Aubert Edward R. Green, Ph.D. Gregory Z.
More informationEDDY CURRENT DAMPER SIMULATION AND MODELING. Scott Starin, Jeff Neumeister
EDDY CURRENT DAMPER SIMULATION AND MODELING Scott Starin, Jeff Neumeister CDA InterCorp 450 Goolsby Boulevard, Deerfield, Florida 33442-3019, USA Telephone: (+001) 954.698.6000 / Fax: (+001) 954.698.6011
More informationMathematical Modelling and Simulation Of Semi- Active Suspension System For An 8 8 Armoured Wheeled Vehicle With 11 DOF
Mathematical Modelling and Simulation Of Semi- Active Suspension System For An 8 8 Armoured Wheeled Vehicle With 11 DOF Sujithkumar M Sc C, V V Jagirdar Sc D and MW Trikande Sc G VRDE, Ahmednagar Maharashtra-414006,
More informationCane Creek Double Barrel Instructions
Cane Creek Double Barrel Instructions Congratulations on your purchase of the Cane Creek Double Barrel rear shock. Developed in partnership with Öhlins Racing, the Double Barrel brings revolutionary suspension
More informationAPS 400 ELECTRO-SEIS. Long Stroke Shaker Page 1 of 5. Applications. Features
Long Stroke Shaker Page 1 of 5 The APS 400 ELECTRO-SEIS is a force generator specifically designed to be used alone or in arrays for studying dynamic response characteristics of various structures. It
More informationDESIGN AND ANALYSIS OF SPRING SUSPENSION SYSTEM
DESIGN AND ANALYSIS OF SPRING SUSPENSION SYSTEM N.Sai kumar, Mail id: saikumarnitturi55@gmail.com R.Vijay Prakash, Asst.Prof, Mail id: vijayaprakashr@hotmail.com Dept Of Mechanical Engineering, ANU Collage
More informationw o r k o G E x - p e S i n c e r t Elegance and Strength BBR HiAm CONA Strand Stay Cable Damping Systems
o b a l N e t w o r k l o G f A E x - p e S i n c e 1 9 4 4 - s r t Elegance and Strength BBR HiAm CONA Strand Stay Cable Damping Systems 1 Cable vibration and damping Despite the wide use of cable-stayed
More informationRELIABILITY IMPROVEMENT OF ACCESSORY GEARBOX BEVEL DRIVES Kozharinov Egor* *CIAM
RELIABILITY IMPROVEMENT OF ACCESSORY GEARBOX BEVEL DRIVES Kozharinov Egor* *CIAM egor@ciam.ru Keywords: Bevel gears, accessory drives, resonance oscillations, Coulomb friction damping Abstract Bevel gear
More informationEaton India Engineering Center & IIT Madras Research & Technology Collaboration
Eaton India Engineering Center & IIT Madras Research & Technology Collaboration Sudhakar Potukuchi, PhD VP Engineering Srinivas Mutukuri, PhD Head, Corporate Research & Technology Nikhil Tambe, PhD Manager,
More informationSWIRL MEASURING EQUIPMENT FOR DIRECT INJECTION DIESEL ENGINE
SWIRL MEASURING EQUIPMENT FOR DIRECT INJECTION DIESEL ENGINE G.S.Gosavi 1, R.B.Solankar 2, A.R.Kori 3, R.B.Chavan 4, S.P.Shinde 5 1,2,3,4,5 Mechanical Engineering Department, Shivaji University, (India)
More informationWhite Paper: The Physics of Braking Systems
White Paper: The Physics of Braking Systems The Conservation of Energy The braking system exists to convert the energy of a vehicle in motion into thermal energy, more commonly referred to as heat. From
More informationResonance Optimization in Linear Compressor
Resonance Optimization in Linear Compressor Madhura Sevekari; Prof.Suneeta Phadkule; Dr. Virendra Bhojwani Lecturer, Prof, Dept of Mechanical engg, Prof, Dept of mechanical engg, Dept of mechanical engg,
More informationChapter 4. Vehicle Testing
Chapter 4 Vehicle Testing The purpose of this chapter is to describe the field testing of the controllable dampers on a Volvo VN heavy truck. The first part of this chapter describes the test vehicle used
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 informationBIKE SPIRAL SPRING (STEEL) ANALYSIS
BIKE SPIRAL SPRING (STEEL) ANALYSIS Yaluppa Madhukar Benake 1, Prof.Santosh Mali Patil 2 1 M.Tech.,Mechanical Engg. Dept., MMEC, Belagavi 2 Assistant Prof. Mechanical Engg. Dept. MMEC, Belagavi Abstract
More informationQuickStick Repeatability Analysis
QuickStick Repeatability Analysis Purpose This application note presents the variables that can affect the repeatability of positioning using a QuickStick system. Introduction Repeatability and accuracy
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 informationThe Application of Simulink for Vibration Simulation of Suspension Dual-mass System
Sensors & Transducers 204 by IFSA Publishing, S. L. http://www.sensorsportal.com The Application of Simulink for Vibration Simulation of Suspension Dual-mass System Gao Fei, 2 Qu Xiao Fei, 2 Zheng Pei
More information95/115D 65/ HSX20. Shock Test Systems
Mechanical shock tests accurately measure the fragility of products and evaluate how they respond to particular shock inputs. Shock test data is key information to ensure any product is capable of withstanding
More informationEfficient and Effective bearing performance evaluation
Efficient and Effective bearing performance evaluation The right software platform for dedicated technical questions, based on the right knowledge and design criteria A typical design process Changes SKF
More informationCOMPACT CYLINDER CYLINDER FORCE AND WEIGHT TABLE BASE WEIGHT EFFECTIVE AREA
CRS COMPACT CYLINDER STROKE TOLERANCE TEMPERATURE LIMITS VELOCITY LIFE EXPECTANCY SERIES CRS 1 psi min to 15 psi max at zero load [.7 bar min to 1 bar max] air.31 inch [.8 mm] -2 to +18 F [-28 to +82 C]
More informationEnergy Harvesting Shock Absorbers
Energy Harvesting Shock Absorbers Lei Zuo, Assistant Professor Energy Harvesting and Mechatronics Research Lab Lei.zuo@stonybrook.edu Substitute Presenter: Dr. Noah Machtay Outline Energy Harvesting Potential
More informationFinite Element Analysis of Clutch Piston Seal
Finite Element Analysis of Clutch Piston Seal T. OYA * F. KASAHARA * *Research & Development Center Tribology Research Department Three-dimensional finite element analysis was used to simulate deformation
More informationSOME FACTORS THAT INFLUENCE THE PERFORMANCE OF
SOME FACTORS THAT INFLUENCE THE PERFORMANCE OF Authored By: Robert Pulford Jr. and Engineering Team Members Haydon Kerk Motion Solutions There are various parameters to consider when selecting a Rotary
More informationDevelopment of a Dual Mode Vibration Isolator for a Laser Communication Terminal
Development of a Dual Mode D-Strut@ Vibration Isolator for a Laser Communication Terminal Dale T. Ruebsamen, James Boyd*, Joe Vecera. and Roger Nagel Abstract This paper provides a review of the development
More informationVIBRATION ANALYSIS OPERATIONAL DEFLECTION SHAPES & MODE SHAPES VERIFICATION OF ANALYTICAL MODELLING MATTIA PIRON GIOVANNI BORTOLAN LINO CORTESE
VIBRATION ANALYSIS OPERATIONAL DEFLECTION SHAPES & MODE SHAPES VERIFICATION OF ANALYTICAL MODELLING MATTIA PIRON GIOVANNI BORTOLAN LINO CORTESE 27 June, 2018 ABSTRACT 2 In the process of designing an alternator
More informationComparing PID and Fuzzy Logic Control a Quarter Car Suspension System
Nemat Changizi, Modjtaba Rouhani/ TJMCS Vol.2 No.3 (211) 559-564 The Journal of Mathematics and Computer Science Available online at http://www.tjmcs.com The Journal of Mathematics and Computer Science
More informationHarmonic Analysis of Reciprocating Compressor Crankcase Assembly
IOSR Journal of Engineering (IOSRJEN) www.iosrjen.org ISSN (e): 2250-3021, ISSN (p): 2278-8719 PP 16-20 Harmonic Analysis of Reciprocating Compressor Crankcase Assembly A. A. Dagwar 1, U. S. Chavan 1,
More informationApplication of Airborne Electro-Optical Platform with Shock Absorbers. Hui YAN, Dong-sheng YANG, Tao YUAN, Xiang BI, and Hong-yuan JIANG*
2016 International Conference on Applied Mechanics, Mechanical and Materials Engineering (AMMME 2016) ISBN: 978-1-60595-409-7 Application of Airborne Electro-Optical Platform with Shock Absorbers Hui YAN,
More informationVALIDATION OF A HUMAN-AND-HARDWARE-IN-THE- LOOP CONTROL ALGORITHM
U.P.B. Sci. Bull., Series D, Vol. 76, Iss. 4, 04 ISSN 454-58 VALIDATION OF A HUMAN-AND-HARDWARE-IN-THE- LOOP CONTROL ALGORITHM Ionuţ STOICA, Marius BĂŢĂUŞ, Mihai NEGRUŞ This study proposes the development
More informationVibration Fundamentals Training System Hands-On Turnkey System for Teaching Vibration Fundamentals
Vibration Fundamentals Training System Hands-On Turnkey System for Teaching Vibration Fundamentals www.haopute.com email:info@haopute.com phone:02884625157 mobile:18982185717 An Ideal Tool for Optimizing
More informationTest Rig Design for Measurement of Shock Absorber Characteristics
Test Rig Design for Measurement of Shock Absorber Characteristics H. R. Sapramer Dr. G. D. Acharya Mechanical Engineering Department Principal Sir Bhavsinhaji Polytechnic Institute Atmiya Institute of
More informationTechnical Guide No. 7. Dimensioning of a Drive system
Technical Guide No. 7 Dimensioning of a Drive system 2 Technical Guide No.7 - Dimensioning of a Drive system Contents 1. Introduction... 5 2. Drive system... 6 3. General description of a dimensioning
More informationInfluence of Cylinder Bore Volume on Pressure Pulsations in a Hermetic Reciprocating Compressor
Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering 2014 Influence of Cylinder Bore Volume on Pressure Pulsations in a Hermetic Reciprocating
More informationDamping in. Prepared by: Steven Hale, M.S.M.E Senior Engineering Manager
in ANSYS/LS-Dyna Prepared by: Steven Hale, M.S.M.E Senior Engineering Manager ANSYS/LS-Dyna allows Rayleigh damping constants α and β only. What is damping? The energy dissipation mechanism that causes
More informationUnderstanding the benefits of using a digital valve controller. Mark Buzzell Business Manager, Metso Flow Control
Understanding the benefits of using a digital valve controller Mark Buzzell Business Manager, Metso Flow Control Evolution of Valve Positioners Digital (Next Generation) Digital (First Generation) Analog
More informationQMOT Motor QSH4218 Manual 42mm QMOT motor family
QMOT Motor QSH4218 Manual 42mm QMOT motor family Trinamic Motion Control GmbH & Co. KG Sternstraße 67 D 20357 Hamburg, Germany Phone +49-40-51 48 06 0 FAX: +49-40-51 48 06 60 http://www.trinamic.com INFO@TRINAMIC.COM
More informationALS (Active Lateral Suspension) By Bernard GAUTIER SNCF
ALS (Active Lateral Suspension) By Bernard GAUTIER SNCF The vertical and lateral motions of a railway vehicle come from the track and the wheel - rail contact dynamics. The motions of the vehicle determinate
More informationModule 6. Actuators. Version 2 EE IIT, Kharagpur 1
Module 6 Actuators Version 2 EE IIT, Kharagpur 1 Lesson 25 Control Valves Version 2 EE IIT, Kharagpur 2 Instructional Objectives At the end of this lesson, the student should be able to: Explain the basic
More informationParameter optimisation design for a six-dof heavy duty vehicle seat suspension
11 th World Congress on Structural and Multidisciplinary Optimisation 07 th -12 th, June 2015, Sydney Australia Parameter optimisation design for a six-dof heavy duty vehicle seat suspension Donghong Ning,
More informationA pump is a machine used to move liquid through a piping system and to raise the pressure of the liquid.
What is a pump A pump is a machine used to move liquid through a piping system and to raise the pressure of the liquid. Why increase a liquid s pressure? Static elevation a liquid s pressure must be increased
More informationWhite Paper. Stator Coupling Model Analysis By Johan Ihsan Mahmood Motion Control Products Division, Avago Technologies. Abstract. 1.
Stator Coupling Model Analysis By Johan Ihsan Mahmood Motion Control Products Division, Avago Technologies White Paper Abstract In this study, finite element analysis was used to optimize the design of
More informationDesigning for Quiet, Vibration-Free Operation
Designing for Quiet, Vibration-Free Operation By Neil Plesner Market Development Manager E-A-R Indianapolis, Indiana DESIGNING FOR QUIET, VIBRATION-FREE OPERATION A common problem associated with many
More informationSimulation and Analysis of Vehicle Suspension System for Different Road Profile
Simulation and Analysis of Vehicle Suspension System for Different Road Profile P.Senthil kumar 1 K.Sivakumar 2 R.Kalidas 3 1 Assistant professor, 2 Professor & Head, 3 Student Department of Mechanical
More informationFluid Power System Model-Based Design. Energy Efficiency. Fluid Power System Model-Based Design Energy Efficiency. K. Craig 1
Fluid Power System Model-Based Design Energy Efficiency K. Craig 1 Energy in Fluid Power Systems Fluid Power Systems have many advantages: High Power Density Responsiveness and Bandwidth of Operation High
More informationDEVELOPMENT OF ELECTRONICALLY CONTROLLED PROPORTIONING DIRECTIONAL SERVO VALVES PROJECT REFERENCE NO.: 38S1453
DEVELOPMENT OF ELECTRONICALLY CONTROLLED PROPORTIONING DIRECTIONAL SERVO VALVES COLLEGE BRANCH GUIDE PROJECT REFERENCE NO.: 38S1453 : BAPUJI INSTITUTE OF ENGINEERING AND TECHNOLOGY, DAVANGERE : MECHANICAL
More informationHigh Speed, Low Weight Momentum/reaction Wheels. Larry Wilhide, Valley Forge Composite Tech, Inc. P.O. Box 344 Carlisle, PA (717)
SSC99-XI-1 High Speed, Low Weight Momentum/reaction Wheels, Valley Forge Composite Tech, Inc. P.O. Box 344 Carlisle, PA 17013 (717) 776-3249 Louis Brothers, Valley Forge Composite Tech, Inc. P.O. Box 344
More informationMagneto-Rheological (MR) Suspension Systems FOR INDUSTRIAL APPLICATIONS
Magneto-Rheological (MR) Suspension Systems FOR INDUSTRIAL APPLICATIONS Improving Operator Comfort, Health and Safety Operators of heavy machinery spend a lot of time in harsh and unpleasant vibration
More informationDesign, analysis and mounting implementation of lateral leaf spring in double wishbone suspension system
Design, analysis and mounting implementation of lateral leaf spring in double wishbone suspension system Rahul D. Sawant 1, Gaurav S. Jape 2, Pratap D. Jambhulkar 3 ABSTRACT Suspension system of an All-TerrainVehicle
More informationWELCOME TO LOCOMOTIVE DESIGN CENTRE RDSO
WELCOME TO LOCOMOTIVE DESIGN CENTRE RDSO SOFTWARE USED UNIGRAPHICS(NX) TEAM CENTER ANSYS MSC Nastran CAD PDM FEM Fatigue Analysis CAD- COPMUTER AIDED DESIGN PDM- PRODUCT DATA MANAGEMENT HIGH ADHESION
More informationSupplier Training: Fastener Torque
Supplier Training: Fastener Torque Presenter: Ralph White Senior Fastener Specialist, Chrysler Group LLC Main Topics: Common definitions uses within Chrysler and Fiat Documentation and communication methods
More informationMAC / MAD series MAC SHOCK ABSORBERS. Order example. TUBE O.D. (mm) STROKE (mm) Select damping constant from graph
M / MD series SHOK SORRS Order example M 0806 1 TU O.D. MD: djustable M: Non-adjustable MD: Double cushion STROK Select damping constant from graph 1: Hight : Medium 3: Low S: -S series K: -K series lank:
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 informationANALYSIS, OPTIMIZATION, AND DEVELOPMENT OF A SPECIALIZED PASSIVE SHOCK ISOLATION SYSTEM FOR HIGH SPEED PLANING BOAT SEATS
ANALYSIS, OPTIMIZATION, AND DEVELOPMENT OF A SPECIALIZED PASSIVE SHOCK ISOLATION SYSTEM FOR HIGH SPEED PLANING BOAT SEATS by Alan R. Klembczyk, Chief Engineer Taylor Devices, Inc. North Tonawanda, NY 14120-0748
More informationExercise 4-1. Flowmeters EXERCISE OBJECTIVE DISCUSSION OUTLINE DISCUSSION. Rotameters. How do rotameter tubes work?
Exercise 4-1 Flowmeters EXERCISE OBJECTIVE Learn the basics of differential pressure flowmeters via the use of a Venturi tube and learn how to safely connect (and disconnect) a differential pressure flowmeter
More informationEstimation of Unmeasured DOF s on a Scaled Model of a Blade Structure
Estimation of Unmeasured DOF s on a Scaled Model of a Blade Structure Anders Skafte 1, Rune Brincker 2 ABSTRACT This paper presents a new expansion technique which enables to predict mode shape coordinates
More informationTechnical Report Lotus Elan Rear Suspension The Effect of Halfshaft Rubber Couplings. T. L. Duell. Prepared for The Elan Factory.
Technical Report - 9 Lotus Elan Rear Suspension The Effect of Halfshaft Rubber Couplings by T. L. Duell Prepared for The Elan Factory May 24 Terry Duell consulting 19 Rylandes Drive, Gladstone Park Victoria
More informationKEYWORDS: ANSYS, Clamping effects, Leaf spring, Pro-E. International Journal of Computational Engineering Research Vol, 03 Issue, 10
International Journal of Computational Engineering Research Vol, 03 Issue, 10 Leaf Spring Analysis with Eyes Using FEA B.Mahesh Babu 1, D.Muralidhar Yadav 2, N.Ramanaiah 3 1 Assistant Professor, Dr.Samuel
More informationVehicle functional design from PSA in-house software to AMESim standard library with increased modularity
Vehicle functional design from PSA in-house software to AMESim standard library with increased modularity Benoit PARMENTIER, Frederic MONNERIE (PSA) Marc ALIRAND, Julien LAGNIER (LMS) Vehicle Dynamics
More informationMechatronics Systems
Mechatronics Systems Mechatronics is that branch of engineering that deals with combined mechanical, electronic and software systems. The elements of mechatronics systems include sensors, actuators, microcontrollers
More information