齿轮箱耦合系统三维接触非线性动态特性仿真

针对现有齿轮传动系统动力学模型和研究方法的不足，提出了基于完全弹性体的齿轮传动系统动态分析方法.以某型船用齿轮箱传动系统为研究对象，基于显式动力学有限元法，考虑部件之间的耦合作用建立了箱体-轴承-斜齿轮副三维动态接触非线性模型.对整体齿轮箱传动系统进行了动态仿真，得到了关键部件的动力学特性，并与非耦合模型动态性能仿真结果进行比较.结果表明:滚动体与齿面应力呈不均匀分布，部件间的耦合作用加剧了齿轮箱的冲击效应.最后采用赫兹线接触理论进行了验证.

Simulation on 3 D Contact Nonlinear Dynamic Characteristic in Gearbox Coupling System

Considering the drawbacks of existing dynamics model and analysis method of gear transmission system， the dynamic analysis method based on perfectly elastic body was presented. A certain type of marine gearbox was taken as the reserch object. Based on explicit dynamic finite element method， the 3 D dynamic contact nonlinear model of housing bearing helical gear pair system was established by considering the coupling effect between components. The dynamics characteristics on the key components were obtained by dynamically simulating the system， then compared with uncoupled model. It is shown that the stress distributions both on rolling elements and teeth surface are uneven and the coupling among the parts aggravates the impact effect in the gearbox. Finally the results are verified by Hertzian line contact theory.