Design and Simulation of Go Kart Chassis

Transcription

1 IJIRST International Journal for Innovative Research in Science & Technology Volume 3 Issue 10 March 2017 ISSN (online): Design and Simulation of Go Kart Chassis Amberpreet Singh Gagandeep Singh Ankur Deol Amit Grewal Akashdip Singh Sembhi Abstract This paper is focused in importance of simulation in designing approach. The static test are created in this paper. The designed frame has been investigated in a variety of altered circumstances to predict that whether the frame will endure during and after the impact or fail in crash or hitting condition or in working condition. The outcomes from these simulated result show that the frame should indeed be safe sufficient in the range of worst case of crash or hitting situations. Keywords: FEA Simulation of Go kart Frame in ANSYS, Finite Element Analysis, Frame Simulation in ANSYS, Go kart Chassis Analysis, Solid Works I. INTRODUCTION Go-kart is just a type of open-wheel car.it comes in all shapes size and customs. From motorless models to high-powered racing machines, some like Superkarts are being able to beat racing cars or motorcycles on long circuits. Karting is commonly perceived as the stepping stone to the larger ranks of motorsports.karts may differ usually in speed or power and some (known as Superkarts) can reach speeds exceeding 260 kilometers per hour (160 mph), while recreational go-karts governed or meant for everyone might be limited to lower speeds. The frame of a vehicle providing safety and seating arrangement of driver and including other sub-systems of the vehicle. We have designed a such frame good in the terms the safety and aesthetics. This paper is focused on various impact conditions like Front Impact Rear Impact Side Impact, Theses there cases are the worst case and have maximum impact energy created during impact. II. ABBREVIATIONS Finite element analysis (FEA), Initial Graphics Exchange Specification (IGES), (AISI) the American Iron and Steel Institute. III. ANALYSIS METHODOLOGY Once cad modeling of the frame structure is done by using solid works, then this design is checked by Finite Element Analysis method. We have used ANSYS (workbench) software for FEA RESULT. We have first import the solid works file model in ANSYS (work bench by) IGES Model format, then specified the properties of material, define the cross-section of tube created component, then create 3D meshing, and them applied load and constrained. The final analysis is shown in ANSYS. We have to minimum deformation and stresses and target to minimum weight of chassis the flow chat of entire process is shown in fig 1. All rights reserved by 74

2 Fig. 1: Analysis Methodology Cad model Different View Fig. 2: CAD model Different View IV. MATERIAL USED We have decided to Aisi 1020 due availability and cost factor of our budget. This material was selected due to its virtuous Combination of all of the typical qualities of Steel like strength, ductility, AISI 1020 steel can be largely utilized in all industrial sectors in order to enhance weldability or machinability properties. we used circular pipes of diameter 25mm with thickness of 1.4 mm. Circular section is selected on the basis that it reduce the weight by diligent tube area Some of mechanical properties are as following: Table 1 Material Used Sr. No. Property 1 Modulus of elasticity (GPa) 205 GPa 2 Yield strength (MPa) 350 MPa 3 Density 7.83g/cm3 4 Tensile strength (MPa) 420 MPa 5 Poisson ratio All rights reserved by 75

3 V. FINITE ELEMENT ANALYSIS After finalizing the material and cross section the thickness and shape of material we start Structural analysis of the chassis was done along with design optimization until a convincing design with sufficient result was produced. The static structural analysis was done in ANSYS Workbench under different conditions. The finite element method (FEM) is a numerical technique or method for finding approximate solutions of prescribed problem. Meshing is done by default setting in ANSYS as shown in fig 3. VI. MESHING Fig. 3: Meshing is done by default setting in ANSYS VII. FRONT IMPACT By assuming that weight of kart including the vehicle +mass of driver is 120 kg impact force is calculated based on a G of 4. F= ma we get 120*9.81*4 that is equal to N (approximate) which is applied on the front nodes from front of chassis of vehicle. By assuming the worse condition of crash or hit. Fig. 4: Stress in chassis in front impact Fig. 5: Deformation of chassis in front impact All rights reserved by 76

4 VIII. SIDE IMPACT By assuming that weight of kart including the vehicle +mass of driver is 120 kg impact force is calculated base on a G of 2.5. F= ma we get 120*9.81*2.5 that is equal to 2943N (approximate) which is applied on the side nodes from side of chassis of vehicle. Fig. 6: Total deformation in side impact Fig. 7: Stress in side impact IX. REAR IMPACT By assuming that weight of kart including the vehicle +mass of driver is 120 kg impact force is calculated base on a G of 2.5 F= ma we get 120*9.81*2.5 that is equal to 2943N (approximate)which is applied on the rear nodes from fornt of chassis of vehicle All rights reserved by 77

5 Fig. 8: Total deformation in rear impact Fig. 9: Stress in rear impact X. CONCLUSION Sr. No Impact Stress (MPa) Displacement (mm) 1. Front Side Rear So three of the stresses i.e. front, side, rear are very less than the yield stress of the material so our design is safe REFERENCES [1] [2] [3] [4] [5] Huei-Huang Lee - Finite Element Simulations with ANSYS Workbench 12 - [fervidhope.blogspot.com] All rights reserved by 78