非对称渐开线斜齿轮传动的热力耦合分析
Coupling Analysis of Heat and Force for Asymmetrical Involute Helical Gear

通过对非对称渐开线斜齿轮啮合面的分析，得到了啮合面摩擦热流量的分布规律。基于APDL建立了非对称渐开线斜齿轮的有限元温度场分析模型。考虑温度对接触压力的影响，对非对称渐开线斜齿轮进行了热力耦合分析。结果表明：达到热平衡时，非对称齿轮本体温度最大值比对称齿轮低约18%，因而非对称齿轮能有效提高轮齿齿面抗胶合能力；由于本体温度的影响，接触应力增大了约16%，温度引起的热弹变形对齿轮载荷分布和应力产生了较大影响。
The distribution of friction heat flow on meshing surface of asymmetrical involute helical surface was obtained based on the analysis of meshing face. The finite element model for temperature distribution of asymmetrical involute helical gear was established based on APDL. Considering the influence of temperature on the contact pressure, we carried out coupled analysis of heat and force for asymmetric involute helical gear. The results and their analysis preliminarily showed that the maximum bulk temperature of asymmetric gear is lower by about 18% than the symmetrical gear at reaching thermal equilibrium, which could effectively improve the tooth surface scuffing capacity. The contact stress of asymmetrical involute helical gear increased by about 16% due to the influence of temperature distribution