Week 11 Car Crash simulation

Objective

In this study, I have performed a car crash simulation parametric study using 3 different values of thickness for the car body which is 0.3mm,0.5mm and 0.17mm. I compared the the total deformation and Equivalent stresses results acting on the model for these three different thickness car body models.

This study is done in Ansys 2022

Procedure:

1.Geometry

• Input the model as Step format in geometry in explicit dynamics module of Ansys.

• Produce symmetry region

• Select stiffness matrix of wall rigid because i am not considering the result status for wall.

2.Material assignment

• Consider wall material property as structural steel
• Car body material property as stainless steel non linear.

3.Meshing

• Mesh method for car: triangle for surface
• Mesh method for wall: tetrahedron

4.Boundary condition

1.Fixed support

Body interaction

2.Displacement

Input the displacement of wall

5.Analysis setting :

End time: 0.001

6.Results (output): for car body thickness 0.5mm

Equivalent Stress

Total deformation:

Result for other cases at different thickness:

7.Conclusion:

Total deformation is less of maximum thickness 0.7mm car body as compare to other because due to more thickness ,it has more stiffness or resisting force.