Thermal ablation, thermal cracking and other problems often appear in pressure plate of tractor clutch. To solve the problems above, the completed platen solid model of the Φ280 clutch pressure plate was established in Solidworks software. Then the finite element model was established for analysis to calculate the thermal stress coupling analysis the heat and stress conditions of the pressure plate. The structure of the pressure plate was improved by changing the level surface to slope shape and increasing friction surface taper to 1 degree. After optimization the pressure plate, the temperature peak is decreased 0.12%, stress peak is decreased 11.96%, and axial deformation is decreased 6.9%.
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