Optimization design for crashworthiness of special school bus seat based on simplified parametric model

摘要

In order to accelerate the optimization process of automotive seats, decrease the amount of computations, and realize forward design of seat performance, a simplified parametric model (SPM) is introduced in this paper during the optimization process of a school bus seat. The validity of the SPM of the seat and the feasibility of the modeling method are proved. The results calculated by the SPM show a good consistency with the shell element model. The SPM can also accurately reflect the deformation and stress of the seat in dynamic tests. Through mechanical analysis and energy analysis of the seat frame, the dynamic performance of the seat is improved to meet regulatory requirements. The SPM has the advantages of simple process, less number of units, time savings in modeling and calculation, and it provides the possibility to quickly analyze the performance of school bus seats and improve seat structure.