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以圆柱体接触力学相关原理为基础,基于Ansys/Ls-dyna操作平台,对齿轮啮合过程动态接触应力进行有限元仿真分析.将啮合齿轮等效为两圆柱体接触,以等效圆柱体的接触应力作为齿轮接触应力,将有限元计算结果与Hertz理论进行对比分析发现,齿轮接触过程最大接触应力与Hertz理论较为接近,说明该等效模型的正确性.在单齿啮合区,其接触应力较双齿啮合处有所增加;在双齿啮合区,其最大接触应力较为平稳.轮齿两端处的接触应力远大于齿面中间处的接触应力,在轮齿中间区域,其接触应力分布比较均匀.
Based on the principle of cylinder contact mechanics, based on the Ansys / Ls-dyna operating platform, the dynamic contact stress during gear meshing process is simulated by finite element method. The meshing gear is equivalent to the contact of two cylinders, Stress as the gear contact stress, the finite element calculation results and Hertz theory were compared and found that the maximum contact stress of the gear contact process and Hertz theory is closer, indicating the correctness of the equivalent model in the single tooth meshing area, the contact stress is more The contact stress at both ends of gear tooth is much larger than the contact stress at the middle of gear tooth surface, and the contact stress distribution in the middle of gear tooth is compared Evenly.