Brake drum coupling analysis based on stress analysis

YUAN Hui-jiang

（School of Automotive Engineering，Weifang University of Science & Technology，Shouguang 262700，China）

Abstract：Aiming at the temperature rising in the working process of the brake drum，the friction coefficient drops unsteady，braking torque reduces，and the fracture failure of the brake drum happens for the surface radial crack of the brake drum caused by thermal stress，based on the results of stress analysis，the brake drum model with complex structure and stress was simplified and established. By analyzing the finite element（FE）model，displacement distribution nephogram and thermal stress nephogram were obtained at 150 ℃，as well as the displacement distribution and stress nephograms，with the regardless of thermal effect. By coupling analysis of the contact area on the outer side and the inner wall of the brake drum and the friction plate，on the interaction of mechanical load and thermal load，the relationship between the maximum stress and the material strength limit of the brake drum. The results indicate that，though the thermal load has a significant impact on the displacement and strength of the brake drum was inspected，the strength requirements of the brake drum can still be met. The research findings lay a foundation for the structure optimization and further dynamic analysis.