【摘要】 对齿轮强度的精确仿真和分析是齿轮优化设计和参数反求的前提。采用的参数化建模方法,创建了精确的轮齿几何模型。在对两类网格模型仿真结果对比分析的基础上,论述了消除舍入误差的必要性。在消除模型舍入误差的条件下,分别对不同网格密度等级的齿轮模型的齿面变形、齿根应力及分布进行数值仿真。对照经验公式的计算结果,进行误差分析,并得出了如下结论:网格的密度等级对齿面最大变形的仿真结果有较大的影响;而对齿面平均变形、总变形和齿根应力影响甚微。更多还原

【Abstract】 Precise simulation of gear intensity is a prerequisite for optimum design and parameter computational inverse studies of gear. The exact curve of tooth profile is produced. By the method for parametric modeling with MATLAB and APDL(ANSYS Parametric Design Language),a precise model of gear is built. Based on a comparative analysis of simulation results in two kinds of finite element models,the simulation results suggest a need for eliminating rounding error.On the different grid density grades,the results of compliances and root stresses distribution are simulated and analyzed. By contrasting with the results of experiential formulas,a conclusion can be drawn:Grid density grades affect evidently the simulation results of the max-compliances,but inconspicuously the simulation results of the average compliances,total compliances and root stress.更多还原