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为了提高铆接精度,将基于变密度法的拓扑优化设计方法和有限元方法应用到某通用卧式铆接型架支撑台结构设计中。以原始支撑台结构在几种典型工况下静力学分析结果为基础,建立了支撑台拓扑优化模型。通过原始结构与各工况下优化后结构对比分析,指出了原始结构的不足,综合各工况优化结果设计出了新支撑台结构。基于有限元分析的对比优化前后的结果表明,新支撑台结构设计在不同工况下应力分布更趋均匀合理,整体刚度显著提高,位移偏移量减小,有利于提高铆接型架铆接精度。
In order to improve the riveting precision, the topology optimization design method and the finite element method based on the variable density method are applied to the structural design of a common horizontal riveting type support. Based on the static analysis results of the original support structure under several typical conditions, a topological optimization model of the support platform is established. By comparing the original structure with the optimized structure under each working condition, the insufficiency of the original structure is pointed out. Based on the optimized results of each working condition, a new supporting platform structure is designed. The results before and after comparison and optimization based on the finite element analysis show that the structure design of the new support platform is more uniform and reasonable under different working conditions, the overall rigidity is significantly increased and the displacement offset is reduced, which is beneficial to improve the riveting precision of the riveting frame.