Abstract
The improvement of computer simulation technology allows car designers to evaluate injury risks of newly designed bumpers using models of a car and the Transport Research Laboratory (TRL) legform impactor. Since the Confor™ foam type CF45 of the TRL legform impactor is not a non-ferrous material, the material's dynamic compression characteristics should be clarified for the development of a highly reliable TRL legform impactor model. The stress–strain characteristics of CF45 of varying thickness were investigated under dynamic compression conditions. The humidity conditions were set at RH30% and RH60%. The effect of humidity on the stress–strain characteristics of CF45 was clarified. We proposed a stress–strain curve for the TRL legform impactor model.
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