Aim To realize optimized construction and volume of rail wheel and axle in complex loads with finite element analysis.

目的通过对火车轮轴在复杂载荷作用下的有限元分析，实现火车轮轴结构与体积的优化。

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So the design of axle is very important and different from the design of general machine parts. Axle design includes two contents: strength design and construction design.

轴的设计很重要，其设计不同于一般零部件的设计，它包含两个主要内容：强度设计和结构设计。

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