Study on brake performance of new drum brake

摘要

This article studied an effective way to improve the braking performance of dram brake and proposed a kind of floating shoe drum brake.We built a model of the drum brake based on rigid-flexible coupling for the simulation and analysis of its’dynamic performance.Through theoretical analysis,the influence of floating direction on braking process is obtained.Then a finite element analysis according to the corresponding operating conditions is simulated,and we obtained the stress and strain distribution cloud,braking torque of the floating drum brake.Comparing braking performance with traditional drum brakes,the results show that floating drum brake will provide higher braking torque with the same corresponding operating conditions.In addition,the floating action of the brake shoe changes the contact condition and makes the contact pressure smaller.