2001 Volume 44 Issue 4 Pages 594-601
CAE tools have been applied for the crash safety design of vehicles, though they haven’t satisfied the optimum design of vehicles. The authors have proposed a Statistical Design Support System (SDSS), and have found that the SDSS is one of available optimization approaches for the nonlinear and dynamic phenomena. This system is a synthetic design method which is based on the response surface methodology and the design of experiments. In this study, a multilevel optimization approach using the SDSS is presented. This approach is well-suited to large-scale multilevel and multidisciplinary optimization problems, and optimum design of vehicle frontal structure and occupant restraint system for crashworthiness is solved. It is shown that successfully and effectively collaborative optimization for frontal structure and occupant restraint system can be conducted by this new approach.