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Residual Fatigue Life Estimation under Mixed Mode Loading
Slobodanka Boljanović, Stevan Maksimović

Last modified: 2015-02-05

Abstract


In the present paper, a computational model for crack growth analysis of mixed mode configurations with and without overload is proposed. Stress intensity factors for mixed mode I/II are calculated by applying analytical and numerical approaches. Six-node singular finite elements are employed in order to simulate the crack growth path. Moreover, the residual life evaluation is investigated using crack growth law based on the equivalent stress intensity factor and a two-parameter driving force model. The proposed crack growth model is validated with experimental data. Fatigue life calculations and the crack path simulation are in a good agreement with crack growth observations.

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