Numerical solution explore of rigid flexible coupling multi-body system dynamic model

This paper analyzes and discusses the problems related to the numerical solution of the rigid flexible coupling multibody system dynamic model. In order to solve the problems of high frequency oscillation and large calculation amount in the solution of the rigid ordinary differential equations, it tries to improve the explicit Runge Kutta method, and applies the Gill method to solve the dynamic differential equations. And confirmed by a case study: In the process of numerical solution of rigid-flexible coupling multi-body system dynamics model, the improved GILL method has small truncation error, fast integration speed and small computation amount. It can provide important basis for the subsequent algorithm improvement and optimization, which deserves the attention of the professional.