In this paper Solid Works is used to establish the geometric model of drum brake. The solid model is imported into AnsysWorkbench, and analyzed for the friction plate stress distribution under different conditions. The results show that when the friction plate material is less metal, the thickness is between 3 mm and 5 mm, the starting angle is between 25 degrees and 27 degrees, the concentration degree of contact stress reduces and the volatility is relatively stable. This can provide good

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... ing performance and increase the service life. The optimization parameters can provide data support for the development of new drum brake.