汽车后排座椅安全带上固定点支架的优化设计

Optimization of Upper Safety-belt Anchorage Point Bracket Structure for Automobile Rear Seat

基于有限元分析汽车座椅安全带固定点强度,使用拓扑优化方法分析安全带固定点金属支架的最佳材料分配方案,建立优化的结构。使用Abaqus软件对不同厚度材料的优化方案进行单个零件的强度分析,确定适宜的厚度。使用LS_DYNA程序对装配有优化后支架的整椅安全带固定点进行强度分析。结果表明:采用拓扑优化并降低质量后的支架的整椅强度和位移能够满足国标要求,实现了提高零件结构强度和降低质量的目的。

The strength of the fixed point of the seat belt of the automobile was analyzed by the finite element method,and the topology optimization method was used to analyze the optimal material distribution scheme of the safety belt fixing point metal bracket.The optimized structure was established,and the strength of the single part with different thickness materials in the optimization scheme was analyzed by Abaqus software,and the suitable thickness was determined.The strength of the fixed point of the seat belt fitted with the optimized support was analyzed by LS_DYNA program.The results show that the strength and displacement of the seat with optimized and lightweight support can meet the requirements of the national standard,the purpose of improving the structural strength and reducing the quality of the parts is achieved.