Multiaxial fatigue damage prediction in a proportional loading cycle
Keywords:
Multiaxial fatigue, Proportional tension-torsion, Mohr’s circle, Findley’s criterion, Multiaxial fatigue damageAbstract
Mechanical components of in-service machines are frequently subjected to multiaxial cyclic loading, which can result in failure due to the fatigue damage. In general, the multiaxial fatigue life can be predicted based on the stress/strain states variation and using a damage criterion. In this paper, fatigue damage given by a proportional tension-torsion loading cycle is predicted based on proposed methodology. Fatigue damage prediction is made using Findley’s criterion on the Mohr’s circles of the stress states. The results showed a good capability of the Findley criterion to predict both the critical plane and durability on the analyzed material.
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