中文摘要：

为分析柔性齿轮对齿轮传动系统动特性的影响,建立考虑时变啮合刚度、非线性摩擦力的柔性齿轮-柔性转子-滑动轴承的柔性多体动力学模型。研究表明：相对于刚性体模型,考虑柔性齿轮和柔性转子的齿轮系统模型更加适合大变形的轻薄化齿轮系统动特性研究;柔性齿轮系统启动阶段存在明显的亚异步振动及齿轮轴向振动幅值的获取;高速重载有利于齿轮系统稳态工况的平稳运转及维持,但会引起齿轮轴向辐射噪声的增加;相对加减速、停机工况,启动工况下的轴向辐射噪声和动态啮合力波动最大。研究结果对齿轮轻薄化设计和认识齿轮传动系统的全工况动特性等研究具有积极意义。

英文摘要：

In order to analyze the influence of flexible gear on the dynamic characteristics of gear transmission system,the flexible gear-flexible rotor-journal bearing dynamic model was built,taking the varying meshing stiffness and nonlinear friction into account. The results showed that the flexible model,is more suitable than the rigid model when analyzing the dynamic characteristics of light gear system that has large deformation. The sub-asynchronous vibration and axial vibration amplitude apparently exist in the start-up period of flexible gear system,which are not found in rigid model. However,high speed and heavy duty are better for maintaining steady operation of gear system,but will cause more radiated noise. The dynamic meshing force fluctuation and axial radiation noise are the largest in the startup working condition than those in the acceleration,deceleration and stop working conditions. The result is of positive significance to the design of a light,thin gear and to the ascertainment of the gear transmission＇s full operating dynamic characteristics.