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首页> 外文会议>International Conference on Reliability Systems Engineering >A Damage Mechanics-Based Fatigue Life Prediction Approach for 30crmnsia Alloy Steel with Impact Defect
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A Damage Mechanics-Based Fatigue Life Prediction Approach for 30crmnsia Alloy Steel with Impact Defect

机译：30克里姆斯合金钢与冲击缺陷的损伤力学疲劳寿命预测方法

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摘要

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. The damage mechanics-finite element method to predict the fatigue life is used, in which the coupling relation between damage field and stress field is taken into account. At last, the fatigue life of 30CrMnSiA alloy steel with impact defect is predicted and the fatigue test is conducted to validate the aforementioned approach.
机译：基于连续损伤力学理论，进行了3​​0crmnsia合金钢与冲击缺陷的疲劳寿命预测。首先，推导出计算初始塑料损伤和多轴疲劳损伤的损伤进化方程。然后提出了校准三种材料参数的30crmnsia合金钢的方法，得到所有材料参数。使用损伤力学有限元方法，以预测疲劳寿命，其中考虑了损伤场与应力场之间的耦合关系。最后，预测了30crmnsia合金钢的疲劳寿命，并进行了疲劳试验以验证上述方法。

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