A Prediction Model for Equivalent Parameters of Cylindrical Fixed Joint

To obtain a prediction model of the equivalent parameters of cylindrical fixed joint, a model based on the micro-element cylinder method was proposed. Although the model based on the micro-element plane method could achieve the goal we wanted to some extent, there was a limitation to the characterization of vector direction and microscopic angle of cylindrical fixed joint; the prediction model of equivalent rotating contact stiffness and equivalent axial contact stiffness based on the micro-element cylinder method was more consistent with the actual contact state of cylindrical fixed joint, consequently, it made up for the shortage of the micro-element plane method; finally, the prediction model was successfully applied in the project, and the feasibility was verified. A new effective way for solving the similar problem is opened up by the model and it also lays a theoretical foundation for the following study of dynamic characteristics.