Load-Driven Multidisciplinary Topology Load Path Study on Car Body

A set of multidisciplinary topology optimization (MTO) and fast validation method is discussed, which can be applied in the car body concept design stage. First, considering seven typical loading cases, optimized load path is obtained by MTO. Then an equivalent car body model is built up with new load path. In order to verify its linear and nonlinear performances quickly, original and optimized path models are established, respectively, by using macro elements. The results show that rigidity and collision performance of the optimized path are better than that of the original one. In the meantime, reduce the validation time from hours to minutes.