Consideration of Damage Accumulated During the Forming Process in Crash Simulations

•  Contributors:
− Ashutosh Patil 1* , Hamid Keshtkar 1 , Anantharam
Sheshadri 1 , Changqing Du 1 , Stanley Wang 1 , Wei Wu 2 , Yu-
Wei Wang 2 , Paul Du Bois 3
1. FCA US LLC, 1000 Chrysler DR, Auburn Hills, MI 48326
2. AK Steel Corporation, Advanced Engineering, RIC, 14661 Rotunda Dr, Dearborn, MI 48120
3. Engineering Technology Associates, Incorporated
Acknowledgement: Images on slide 8 and 9 are courtesy of AK Steel Corporation, used with permission.

• Formed parts undergo thinning and plastic Deformation

• The method of taking this into account in crash models is well established

• Conduct test to deform the part at damage location induced during forming.
• Perform forming and crash simulation to duplicate test and demonstrate effect of damage by comparing failure with and without damage .