In this paper,the finite element software is used to analyze the overall dynamics of a gearbox 31311 ta-pered roller bearing cage.At the same time,cracks were introduced at the maximum equivalent stress of the cage,and the fracture behavior was studied based on the Gurson-Tvergard-Needleman(GTN)meso-damage mod-el.The results show that this method can provide reference for fracture analysis and prediction.
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