The dynamic characteristics of spiral bevel gear transmission with additional damping ring are studied, and the influence of damping ring structure on its vibration reduction performance is analyzed. The main research contents include:
1) Parametric modeling of spiral bevel gear
The three-dimensional parametric accurate modeling method of spiral bevel gear based on CATIA modeling software is studied, and the high-precision three-dimensional model of spiral bevel gear is established, which lays a foundation for the simulation contact analysis of spiral bevel gear.
2) Research on meshing stiffness of spiral bevel gear based on finite element
Using the self-developed three-dimensional parametric modeling software of spiral bevel gear, a pair of spiral bevel gears are established, and then the meshing stiffness of spiral bevel gear is analyzed and studied based on ANSYS, which lays a foundation for the dynamic analysis of spiral bevel gear transmission.
3) Analysis of dynamic characteristics of spiral bevel gear transmission
Based on the lumped mass method, an eight degree of freedom bending torsion shaft coupling nonlinear vibration dynamic model of spiral bevel gear transmission is established; The Runge Kutta method is used to solve the dynamic equation, and the natural characteristics and dynamic response characteristics of spiral bevel gear transmission are studied; The influence of transmission parameters on the dynamic load characteristics of spiral bevel gear transmission is analyzed.
4) Contact analysis of damping ring
The damping principle of damping ring is discussed; Using the relevant knowledge of elastic-plastic mechanics and structural mechanics, the contact analysis and calculation of closed damping ring and open damping ring are carried out, and the contact pressure between them and gear groove is solved respectively; The contact stiffness between damping ring and gear is calculated by using the knowledge of contact mechanics.
5) Dynamic characteristics analysis of spiral bevel gear transmission system with additional damping ring
Based on the lumped mass method, a twelve degree of freedom nonlinear vibration dynamic model of spiral bevel gear transmission system with additional damping ring is established; The Runge Kutta method is used to solve the system dynamic equation, study the natural characteristics, dynamic response characteristics and dynamic load characteristics of the spiral bevel gear transmission system with additional damping ring, and study the influence of the structural parameters of open damping ring and closed damping ring on their vibration reduction characteristics.
6) Development of parametric modeling software and dynamic analysis software for spiral bevel gears
Using VB Net and CATIA to develop the parametric modeling software of spiral bevel gear pair; The dynamic analysis software of spiral bevel gear transmission system is developed by using MATLAB.