A structural multi-objective topology optimization method integrating the solid isotropic material with penalization (SIMP) approach, compromise programming method and criteria importance through intercriteria correlation (CRITIC) method is proposed. The SIMP approach performs topology optimization. The compromise programming method builds a comprehensive objective function to handle the multi-objective optimization. The CRITIC method, which reflects the contrast intensity and conflicting character of objectives, is applied to determine the weight coefficients of objectives. The conceptual design of a vehicle shock tower is taken as a numerical example. Comparison of the original design and the optimized conceptual design indicates that the stiffness and frequency performance of the shock tower clearly improve as the total weight reduces. Meanwhile, comparison of the weight coefficients and corresponding optimization results produced by the subjective method, CRITIC method, grey comprehensive relational analysis and entropy weight method proves that the CRITIC method is feasible and superior in structural multi-objective topology optimization.

提出了一种将固体各向同性材料与惩罚(SIMP)方法、折衷规划方法和准则间相关性(CRITIC)方法相结合的结构多目标拓扑优化方法。SIMP 方法执行拓扑优化。折衷规划方法建立一个综合目标函数来处理多目标优化。采用反映物镜对比度强度和冲突特性的CRITIC方法确定物镜的权重系数。以汽车减震塔的概念设计为例。原始设计与优化后的概念设计比较表明，随着总重量的减轻，减震塔的刚度和频率性能明显提高。