Apparatus and method for optimization analysis of vehicle body vibration characteristics

摘要

The optimal analysis method of the vibration characteristics of the vehicle body includes vibration analysis step S1 for obtaining the maximum displacement of a part of the vehicle body by performing vibration analysis, the maximum displacement load acquisition step S3 for obtaining a load that imparts a displacement equal to the maximum displacement, and the calculated load. Sensitivity analysis step S5 for specifying a part or member to be optimized by applying it, design space setting step S7 for setting a design space for a specific part or member, and an optimization block for generating an optimization block model in the set design space The model generation step S9, the coupling processing step S11 that combines the optimization block model to the vehicle body to generate an optimized analysis model, and the load obtained in the maximum displacement load acquisition step S3 are used as the load condition, and the inertial force due to vibration is taken into account for the optimization analysis. It is equipped with optimization analysis step S13 which performs and obtains the optimal shape of the optimization block model.