The Finite Element Simulation And Testing For Working Stress Of Brake Drum Of Medium-Duty Truck

Frequent braking, which make the brake drum so often in a fever state, sometimes in a state of continuous high temperature, result in decreased braking performance. Brake shoe and brake drum are both integral parts in brakes. In the most cases, their failure is the main reason for the failure of the brake.In this paper, through the finite element simulation and experimental tests to the brake drum of medium-duty truck, it revealed the pressure distribution of the brake drum which under the true working conditions.The main contents are:(1)Firstly, It used the software UG to build a three-dimensional modeling and then it made some simulations to the brake drum by using finite element software ABAQUS for the different structures and different working conditions ,the main piece to simulate concluded that the affection to the initial contact state for different radius of the friction lining and the affection to the stress field distrib ution for different position of the anchor pin and the affection to the stress field distribution for the fixed-end constraint on the brake drum It reveals the contact stress distribution of the brake drum in the real work condition.(2)It established a static brake test bench for medium-sized truck to make the static brake testing by using the Strain-Gauge Measurement Technology. It either tested the stress and strain of the brake drum at different pressure or at different positions of the brake drum, thus revealing the real brake stress distribution of the drum.It provided the experimental data for improving the brake performance and the brake structure.This paper make an in-depth researched on the fatigue failure of the brake drum caused by an irrational design,and then carried on to further improve on the research of breaking out problem of the brake drum.It is believed that this paper will has a guiding significance to the actual project.