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。
Optimized design of rail wheel and axle is finished. Conclusion This result satisfies our national railway standard. The maximum stress is less than the yield stress.
结论实现火车轮轴的优化设计，优化后轮轴的最大应力均小于屈服应力，满足我国铁路的标准要求。
The bond graph models of wheel-rail creep forces, of free wheel set, and of two-axle vehicle are developed with associated numerical calculations.
文中建立了轮轨蠕滑力、自由轮对和两轴车的键图模型，并给出了部分数值计算的结果。
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