Auto safety has become the second most important issue when making the decision to purchase a vehicle. Unfortunately, research in this field has been greatly hindered by the lack of available tools. Specifically, crash dummies used to design crash energy management and restraint systems are not very human-like. Because testing of cadavers, which is needed to obtain human injury tolerance data, is very expensive to conduct, an alternative is to develop and validate a numerical model for the evaluation of vehicle crashworthiness. The purpose of this study is to develop a finite element model of the 50th percentile male human thorax.