| 一种新的多轴疲劳损伤参量 |
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| 引用本文： | 尚德广,王德俊.一种新的多轴疲劳损伤参量[J].东北大学学报(自然科学版),1997,18(2):133-137. |
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| 作者姓名： | 尚德广 王德俊 |
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| 作者单位： | 东北大学机械工程学院 |
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| 摘 要： | 基于临界面法提出一种与加载路径无关的多轴疲劳损伤参量，该参量考虑临界损伤平面上的最大剪切应变和法向应变程两个参数，并利用Ｖｏｎ Ｍｉｓｅｓ准则将两参数合成一个等效损伤在量，结果表明，本文所提出的多轴疲劳损伤参量既可用于多轴比例循环加载，也可用在非比例加载条件下，用其预测多轴疲劳寿命，误差约在１．５个因子之内。
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| 关 键 词： | 临界损伤平面 寿命预测 机械零件 多轴疲劳损伤 |
A New Parameter for Multiaxial Fatigue Damage |
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| Shang Deguang,Wang Dejun,Zhou Zhige.A New Parameter for Multiaxial Fatigue Damage[J].Journal of Northeastern University(Natural Science),1997,18(2):133-137. |
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| Authors: | Shang Deguang Wang Dejun Zhou Zhige |
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| Abstract: | A path independent parameter for multiaxial fatigue damage is presented based on the critical plane approach. Both parameters of shear strain amplitude and normal strain excursion are considered in this parameter. An equivalent strain is made with both parameters by Von Mises criterion. The results show that multiaxial fatigue damage parameter presented in this paper may be used under either proportional or non proportional loading. It is used to predict multiaxial fatigue life. Errors are within 1 5 factor. |
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| Keywords: | multiaxial fatigue proportional loading non proportional loading critical plane approach life prediction |
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