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Structural Fatigue Life Prediction Based on ANSYS Random Vibration Analysis

Fatigue failure is one of the main reasons for the engineering structure’s failure, and it is of great significance to predict fatigue life of structure. This paper briefly introduced the principle of stochastic fatigue failure calculation analysis, and analyzed random vibration of a T-shaped structure by using ANSYS software. Under a given load combined with linear cumulative damage theory and three interval method proposed by Steinberg, the fatigue life of the structure is predicted.