Research on Structure Design of The Dual Steel Disc in Brake Based on Rigid-Flexible Coupling Simulation Analysis

Abstract

A research method is proposed to improve the structure of the dual steel disc in wet multi-disc brake based on virtual prototype simulation analysis. The finite element flexible body model of the dual steel disc was established by CAE software, and the accuracy of the flexible body model was verified by the method of identifying natural frequency by near-field acoustic radiation. Based on the dependable finite element flexible body model, the rigid-flexible coupling virtual prototype model of the wet multi-disc brake was established, and the dynamic simulation analysis of brake during the braking period was processed. According to the results of brake dynamics simulation, the time-frequency characteristics of friction pair contact force and the change characteristics of piston spring force during the braking process are analysed. Based on credible dynamic simulation analysis, the mises stress distribution and deformation changes of the steel disc at critical moments are acquired. Depending on the virtual prototype analysis results, it is powerful to guide the structural design and improvement of the dual disc, and some phenomena and problems which are difficult to find through actual measurement can be researched effectively.