| 反对称犬骨状连接试件的应力分析及寿命研究 |
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| 引用本文： | 倪俊,刘军,邵小军,岳珠峰. 反对称犬骨状连接试件的应力分析及寿命研究[J]. 机械强度, 2009, 31(2) |
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| 作者姓名： | 倪俊 刘军 邵小军 岳珠峰 |
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| 作者单位： | 西北工业大学,工程力学系,西安,710072;西北工业大学,工程力学系,西安,710072;西北工业大学,工程力学系,西安,710072;西北工业大学,工程力学系,西安,710072 |
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| 摘 要： | 对反对称犬骨状连接试件进行疲劳试验,并通过有限元分析,研究孔周应力分布,验证基于应力应变的多轴疲劳预测模型.试验和有限元分析表明,疲劳裂纹一般首先在双犬骨板交界处附近的螺钉孔形成;沉头螺钉连接,使得应力峰值偏向两板交界处;基于应力应变的多轴疲劳寿命预测模型估计试件的疲劳寿命误差为14.5%.
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| 关 键 词： | 反对称犬骨连接 沉头螺钉 多轴疲劳 Smith-Watson-Topper 寿命预测 |
ANALYSIS OF THE STRESS DISTRIBUTION AND FATIGUE LIFE OF ASYMMETRICAL DOG-BONE MECHANICAL JOINT |
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| NI Jun,LIU Jun,SHAO XiaoJun,YUE ZhuFeng. ANALYSIS OF THE STRESS DISTRIBUTION AND FATIGUE LIFE OF ASYMMETRICAL DOG-BONE MECHANICAL JOINT[J]. Journal of Mechanical Strength, 2009, 31(2) |
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| Authors: | NI Jun LIU Jun SHAO XiaoJun YUE ZhuFeng |
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| Affiliation: | Department of Engineering Mechanics;Northwestern Polytechnic University;Xi'an 710072;China |
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| Abstract: | The objectives are to describe the stress distribution at countersunk fastener holes,to validate the availability of the multi-axial fatigue life predicating method.Both experimental and computational studies are described and compared when possible.The results show that:1.Fatigue failure usually starts at the locations near the holes where two bones meet each other.2.Countersunk fastener joint make the peak value of the stress appear at the locations near the holes where two bones meet each other.3.The err... |
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| Keywords: | Smith-Watson-Topper |
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