大齿宽齿轮耦合转子系统准静态接触分析及动态特性

By slicing wide-faced gears along gear width and constructing a series of nonlinear contact elements, which are coupled with Timoshenko beam elements according to the mounting position of each element on rotors, a multi-point quasi-static contact analysis model for geared rotor systems is established, and the generalized loaded static transmission error for gear pairs is proposed for the first time. By solving the static balance equations, the load distribution and mesh misalignment distribution are obtained. The mesh excitations of gear pairs are introduced into the dynamic model to solve the dynamic responses of the system considering shaft deflection. Compared with the finite element method, the proposed quasi-static contact analysis model is validated. The effects of supporting layout, power transmission path and transmitted torque on quasi-static and dynamic characteristics of the system are investigated. The results show that the supporting layout has significant effect on quasi-static contact condition and dynamic behaviors of the system. The quasi-static and dynamic behaviors of the system are very close under different power transmission paths. The transmitted torque shows very weak influence on contact patterns of mating gear teeth. However, as the transmitted torque increases, the increasing mesh misalignment results in stronger system vibration.