研究齿轮传动热平衡状态及齿面接触温度是高速重载齿轮传动的重要研究课题之一.论文利用热弹耦合方法,建立了某大型重载船用齿轮箱齿轮一轴一轴承一箱体耦合系统有限元模型.研究齿轮系统热平衡过程,结合齿轮传动的传热学、摩擦学及啮合原理确定边界条件,对系统进行了数值仿真,得到了系统耦合应力场及温度场,结果表明考虑热弹耦合后齿根应力增大了6.3％,接触应力增大11.5％,可为大功率船用齿轮箱参数、优化及润滑散热系统的合理设计奠定基础.%Research on the state of thermal equilibrium and the contact temperature of tooth surface is one of the important projects in the research field of high speed and heavy duty gear transmission. A finite element model of a coupled gear-rotor-bearing-housing system of a heavy duty marine gearbox is developed by using the thermoelastic coupling method.The thermal equilibrium procedure of the gear system is studied.The numerical simulation of the system is performed by considering the heat transfer theory, tribology and engagement theory .The coupling stress field and temperature field of the system are obtained. Results show that after taking the thermoelastic coupling into consideration,the tooth-root stress is increased by 6.3% and the contact stress by 11.9%. The proposed modeling approach can serve as the basis for gear parameter optimization and the reasonable design of the lubricating and heat dissipating system.
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