基于折衷规划法的驻车制动操纵机构多目标优化设计

Multi-objective Topological Optimization for Hand Braking Control Structure Based on Compromise Planning

为解决汽车驻车制动操纵机构质量超重问题,考虑刚度最大和质量最小两个目标,运用折衷规划法建立了手制动操纵机构的多目标拓扑优化数学模型,在连续体结构变密度拓扑优化方法基础上,建立了驻车制动操纵机构的有限元模型,利用Optistruct软件进行了多目标拓扑优化分析。结果表明,优化后驻车制动操纵机构刚度满足要求,质量有所减轻,并通过实际样件的耐久试验验证了此方法的可行性。

In order to reduce the weight of the automotive hand braking control mechanism, a mathematical multi- objective topology optimization model is established with compromise planning method, taking account of two goals of maximizing stiffness and minimizing mass. Based on the topology optimization method of variable density structure of the continuum, a finite element model of the hand braking mechanism topology optimization is established, and multi-objective topology optimization analysis is carried out with software Optistruct. The results show that the optimized hand braking control mechanism which features less weight meets the stiffness requirement, and durability test with practical sample parts proves feasibility of this method.