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首页> 外文会议>International conference on measuring technology and mechatronics automation >A Damage-coupled Time-dependent Multi-axial Fatigue Failure Model for Solder Alloy 63Sn-37Pb
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A Damage-coupled Time-dependent Multi-axial Fatigue Failure Model for Solder Alloy 63Sn-37Pb

机译：锡合金63Sn-37Pb的损伤耦合时变多轴疲劳破坏模型

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摘要

Based on the time-dependent deformation behavior of solder alloy 63Sn-37Pb at room temperature, a damage-coupled unified visco-plastic multi-axial fatigue model and its failure criterion were proposed. In the evolution equation of damage for the model, the time-dependent effect of damage was taken into account. The model was used to predict the fatigue life under different loading paths. The comparison between the predicted and experimental results demonstrated that the time-dependent failure model can simulate the deformation behavior and predict the fatigue life well under different nonproportional strain paths.
机译：根据63Sn-37Pb焊料合金在室温下随时间变化的变形行为，提出了损伤耦合的统一粘塑性多轴疲劳模型及其破坏准则。在模型的损伤演化方程中，考虑了损伤随时间的影响。该模型用于预测不同载荷路径下的疲劳寿命。预测结果与实验结果的比较表明，基于时间的失效模型可以模拟变形行为，并能很好地预测不同非比例应变路径下的疲劳寿命。

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