![Aim and Objectives of the Project Aim : To study frontal impact of a passenger bus and to recommend methods to improve safety Objectives : ,[object Object],[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Bus Crash Analysis
- 1. Final Project Presentation Study of Frontal Impact of a Passenger Bus Manjunath Rao T S BBB0906034 M. Sc. (Engg.) in Automotive Engineering Academic Guide : Mr. Madan J Project Manager, SASTECH, Bangalore
- 5. Design Bus Specifications: 500 Engine & subsystems 400 Powertrain 300 Drivetrain 160 litres Fuel Tank Capacity 10160 Permissible R.A.W. 5080 Permissible F.A.W. 12500 Max. G.V.W 4010 Bare chassis kerb weight Weights (kg.) 53 Max. Seating capacity 240-275 Min. ground clearance in mm 2050 Track rear 1930 Track front 2375 Max. width 10309 Overall length 3200 Rear overhang 1775 Front overhang 5334 Wheel base Dimension (mm) (as per IS 9435) LPO 1510/55
- 6. Construction
- 7. Material : Structural steel Std. : IS 2062 Design
- 8. Geometric modeling has been carried out using Pro-E 2001 software. All the geometric datas were collected from “KMS Coach Builders Pvt. Ltd.” (Official partners of KSRTC for coach building). All the structural details were as per the 2D drawings provided. Various views of modeled bus is shown in following sections: Geometric Modeling: Design
- 10. Meshed bus with shell elements and 1-D Beam Elements FE Model 2963 1D Elements 105 Total Parts 260779 Shell Elements 264139 Total Elements
- 11. Mass Elements Rigid Elements FE Model Parts replaced with Mass Element
- 12. Boundary Conditions Contact interface is done by defining the box and providing *CONTACT_AUTOMATIC_SINGLE_SURFACE
- 13. Friction between tyres and rigid plane Boundary Conditions
- 14. Simulation Inputs Material Properties assigned Simulation Inputs 0.2 secs Simulation time 30 km/hr Velocity 7.85e-6 3.55e-6 7.85e-6 Density Kg/mm3 210 210 210 Young’s modulus GPa 0.3 0.3 0.3 Poisson’s Ration 350 MAT_PIECEWISE_LINEAR_PLASTICITY MAT_24 MAT_RIGID MAT_ELASTIC MAT_1 Yield Stress MPa Material
- 16. Simulation & Results (contd.)
- 18. Simulation & Results (contd.)
- 19. Simulation & Results (contd.)
- 20. Simulation & Results (contd.)
- 21. Simulation & Results (contd.)
- 22. Design Improvement Comparison of various crush initiators
- 23. Design Improvement Comparison of bead type crush initiators
- 24. Simulation & Results (contd.)
- 25. Simulation & Results (contd.)
- 26. Simulation & Results (contd.) Comparison of Load pattern with both designs
- 30. Thank You