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Based on the continuum damage mechanics theory, the fatigue life prediction for 30CrMnSiA alloy steel with impact defect is conducted. At first, the damage evolution equations to calculate the initial plastic damage and multiaxial fatigue damage are derived. Then the method to calibrate three kinds of material parameters for 30CrMnSiA alloy steel is proposed and all the material parameters are obtained...
This paper describes flowing of molten metal in a novel electric arc furnace. Combined AC and DC components are used in the supply system for the furnace. Finite element method is used to investigate the impact of AC component frequency on the flowing of molten metal.
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