Week 11 Car Crash simulation
Objective :
To perform a parametric study to analyse a frontal impact car crash test using three different values of thickness for the car body.
CAD Model
Simulation setup :
The pre-processing steps are followed for all the cases.
The car body is assigned with material stainless steel NL and the wall is assigned with the structural steel material.
Properties of structural steel
Properties of stainless steel NL
Symmetry regions :
The symmetry regions are created for the wall and the carbody as shown in the below figure.
Symmetry regions
Meshing setup:
The model is meshed with the element size of 175mm as to be in limit of the academic version.
Meshed model
Boundary conditions :
- The faces of the carbody are body are fixed which are in no contact to the wall.
- The dispalcement of 500mm is given to the wall in z direction.
Fixed support
Displacement
- In the analysis settings the end time is set to 0.001.
Results :
Case-1 : carbody thickness = 0.3
Total Deformation
Directional Deformation (X-axis)
Equivalent Von-Mises Stress
Equivalent Elastic Strain
Case-2 : thickness = 0.5
Total Deformation
Directional Deformation (X-axis)
Equivalent Von-Mises Stress
Equivalent Elastic Strain
Case-3 : Thickness = 0.6
Total Deformation
Directional Deformation (X-axis)
Equivalent Von-Mises Stress
Equivalent Elastic Strain
ANIMATION :
https://drive.google.com/drive/folders/1wDnKM417FKnfUyDQUcBc-ujdR3HfOSrF?usp=sharing
Parametric study results :
Conclusion :
As the thickness of the carbody increases the values of the total deformation and the stress snd strain decreases.