| 基于临界面法的纤绳节点板疲劳损伤评估 |
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| 引用本文： | 谢志英.基于临界面法的纤绳节点板疲劳损伤评估[J].长江大学学报,2009(1):105-107. |
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| 作者姓名： | 谢志英 |
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| 作者单位： | 长江大学城市建设学院,湖北荆州434023 |
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| 摘 要： | 采用基于临界面的多轴疲劳寿命预测方法，对纤绳节点板在长期的风荷载作用下的疲劳损伤进行了评定。以最大剪应变平面的方法确定每一个时间点的临界损伤面，根据非比例多轴加载下最大剪应变临界面不断变化的特点，再以该平面对材料损伤影响的大小为权值进行加权平均，把权值平均最大的剪应变平面定义为临界损伤平面；用多轴循环计数法对临界损伤面上的正剪应力同时进行循环计数，确定每个循环的临界损伤参量。结果表明，临界面法更符合纤绳节点板多轴非比例加载的实际情况，因而可以给出更加合理的结果。
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| 关 键 词： | 纤绳节点板 多轴非比例加载 损伤参量 临界面法 |
Fatigue Life Prediction of Mast's Ear Plate Based on Critical Plane Method |
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| XIE Zhi-ying.Fatigue Life Prediction of Mast''s Ear Plate Based on Critical Plane Method[J].Journal of Yangtze University,2009(1):105-107. |
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| Authors: | XIE Zhi-ying |
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| Institution: | XIE Zhi-ying(Yangtze University,Jingzhou 434023) |
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| Abstract: | The fatigue damage of guyed mast's ear-plate's multi-axial non-proportional loading based on critical plane method was evaluated.Through coordinate transformation all the nodes's stress component and strain component in the material plane was established,and the critical damage plane of each time was fixed by the method of maximum shear strain plane.According to the characteristis of unfixed critical damage plane under amplitude multiaxial fatigue loads and weighted mean the weight coefficient can be fixed ... |
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| Keywords: | guyed mast's ear plate multi-axial non-proportional loading damage parameter critical plane approa |
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