Abstract:

The deformation behavior of B340/590DP and 22MnB5 strength board material was investigated
for a mandatory safety demonstration vehicle to provide a date base for the development of strength board
material property and hot forming technology. Numerical simulations were done by using CAE (computer
aided engineering) strength, technology analyses and economic analyses methods taking the crash capability
of bodywork A column and B column as necessary condition. The results show that both the passenger
compartment changes and the A column back volume for a 22MnB5 alloy are lower than that of B340/590DP
alloy under the same condition. The crash deformations of 22MnB5 alloy at 5 different places are all smaller
than that of B340/590DP alloy for the B column strength board materials during crash with a little bodywork
acceleration variation and with little higher invasion rate than that of B340/590DP alloy. Therefore, a reasonable
control of deformation, security framework intrusion velocity, and energy-absorbing- component deformationmode,
can effectively reduce injury risk in a collision dummy.

Key words: automotive safety, collision resistant performances, bodywork key parts, strength board material, computer aided engineering (CAE), deformation behavior