Abstract
Non-heat treated steels have been widely used like a shaft, in terms of low cost and energy saving. These members for the complicated stress of the stress amplitude during operation and the average stress, such as residual stress and clamping force is loaded, it is important to predict the fatigue life. Continuum damage mechanics is able to analyze the development of damage and fracture to the material, even the high cycle fatigue is reproducible by using the two scale model. In this study, damage mechanics of two scale model is applied to non-heat treated carbon steel crankshaft. Then, the fatigue life is predicted to verify the usefulness by comparing with the experimental results.
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