兼顾到吸能元件的吸能效果与节约材料的要求,基于SIMP变密度法拓扑优化,运用相对差值的数学方法,建立了降低静态刚度与动态各阶固有频率的多目标拓扑优化数学模型。以优化好的锥角及壁厚的泡沫铝吸能元件为分析对象,对其进行多目标拓扑优化设计,最终吸能元件在保证吸能效果的同时,质量减轻了13%,达到了节约资金的目的。 Taking into account the energy-absorbing effect of energy-absorbing elements and the material-saving requirements, a multi-objective topology optimization mathematical model for reducing static stiffness and dynamic natural frequencies of each stage is established based on the SIMP variable density method topology optimization and the relative difference mathematical method. Optimized cone angle and wall thickness of the aluminum foam energy-absorbing components for the analysis of the object, its multi-objective topology optimization design, the final energy-absorbing components to ensure energy absorption effect, while reducing the quality of 13%, to achieve savings the goal of.