为了分析齿轮传动系统引起噪声的原因，实现依据疲劳寿命对传动系统的振动进行控制，建立齿轮系统中振动能量与疲劳寿命的关系。针对船用分扭人字齿轮传动系统，运用集中参数法建立了分扭传动系统的弯扭轴耦合振动的动力学模型和方程，考虑齿轮静态综合传动误差、安装制造误差和时变啮合刚度等因素，采用数值积分法计算了不同输入转速和输入功率下系统振动能量和齿轮疲劳寿命，对振动能量和齿轮疲劳寿命数据进行了分析处理，获得了传动系统的疲劳寿命随振动能量的变化规律。结果表明：随着振动能量的增加，齿轮的疲劳寿命呈指数型急剧下降；分扭级的振动能量与疲劳寿命明显小于并车级的振动能量与疲劳寿命。

In order to analyze the causes of noise caused by gear transmission system,and control the vibration of transmission system according to fatigue life,the relationship between vibration energy and fatigue life in gear system was established.Aiming at the marine split torque herringbone gear transmission system,the dynamic model and equation of bending torsional axial coupling vibration of split torque transmission system were established by using the centralized parameter method.Considering the factors such as gear static comprehensive transmission error,installation and manufacturing errors and timevarying meshing stiffness,the vibration energy of the system and gear fatigue life under different input speeds and input powers were calculated by numerical integration method,the data of vibration energy and gear fatigue life were analyzed,and the variation law of fatigue life of transmission system with vibration energy was obtained.The research results show that with the increase of vibration energy,the fatigue life of gear decreases sharply and exponentially; The vibration energy and fatigue life of the split torque stage are significantly less than those of the parallel stage.

TK414.4