Optimum Design of a Steel Bar Breaking System in a Sled Test Facility Using LS-OPT

The steel bar breaking system is a component of sled test system for the automobile crashworthiness. The purpose of this study is to optimize the steel bar breaking system in order to extract the crash pulse close to the barrier test result. The design variables are the height, the thickness and the number of each array of the steel bar plates. The optimum design is obtained using DOE (design of experiments) and RSM (response surface method) in the LS-OPT. LS-INGRID is adapted to automate the optimization process because the dimensions of the steel bar plates could be changed in the design process. The optimum design values of the steel bar breaking system are determined to minimize the difference between the crash pulses of the test result and the simulation result.