| In this term, we connected damage mechanics with reliability maths to discuss the failure life and reliability under cyclic loading. Firstly, the history of damage mechanics theory and reliability theory is briefly reviewed. Then we proved by the connection damage mechanics with elasti-plasti mechanics that the damage of isotropic material is anisotropic under cyclic loading, and name damage variables. consequently we discuss the failure life and reliability under steady-state loading .In the end we discuss the failure life and reliability under random loading,and gave their brief calculation formula. |
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