面向不锈钢地铁整车结构的显式拓扑优化设计

受限于制造要求和较大的计算规模，整车级的列车拓扑优化为列车设计阶段的难点之一。本文面向不锈钢地铁整车结构设计，开展基于可动变形组件法（Moving Morphable Component, MMC）的显式拓扑优化研究。根据某不锈钢地铁车体结构设计需求，依据EN 12663标准，建立了地铁车体结构MMC拓扑优化数学模型，同时给出了适用于列车的拓扑优化设计流程，搭建了完整的显式拓扑优化框架下的地铁车体结构优化算法平台。基于MMC方法，可以直接获取不锈钢地铁车体整车级传力路径，数值算例验证了本文算法的优势。

Explicit Topology Optimization Design of Stainless Steel Metro Carbody

Due to the manufacturing requirements and the large scale of calculation efforts, the topology optimization at the car-level is one of the difficulties in metro car design. Oriented to the structure design of the stainless steel metro carbody, moving morphable components (MMC)-based explicit topology optimization approach is studied. According to the EN 12663 standard, the MMC-based topology optimization model is established. Besides an integral design process, an optimization design platform under explicit topology optimization framework is also established. Resorting to MMC, the loading path of the whole carbody can be obtained directly. The effectiveness of the proposed approach is illustrated through some numerical examples.