| 锪窝填充孔孔边角裂纹应力强度因子的有限元分析 |
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| 引用本文： | 屠少威,黄其青,郭今,谢伟.锪窝填充孔孔边角裂纹应力强度因子的有限元分析[J].航空工程进展,2012,3(2):195-200. |
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| 作者姓名： | 屠少威 黄其青 郭今 谢伟 |
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| 作者单位： | 西北工业大学航空学院,西安,710072 |
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| 摘 要： | 对锪窝填充孔孔边角裂纹应力强度因子进行研究对提高结构安全性具有重要意义。根据飞机上常用的锪窝铆接典型结构，运用ANSYS软件对锪窝孔孔边角裂纹进行有限元分析，建立铆钉与锪窝孔接触模拟铆钉对锪窝孔的填充作用。计算得到含铆钉填充以及空孔时锪窝孔边不同裂纹尺寸下裂纹前缘的应力强度因子分布。对比分析结果表明：铆钉填充能显著降低锪窝孔边角裂纹的应力强度因子，提高结构寿命。
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| 关 键 词： | 锪窝孔 应力强度因子 有限元 角裂纹 |
Stress Intensity Factor Finite Element Analysis of Corner Crack at Rivet-filled Countersink Hole |
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| Tu Shaowei,Huang Qiqing,Guo Jin,Xie Wei.Stress Intensity Factor Finite Element Analysis of Corner Crack at Rivet-filled Countersink Hole[J].Advances in Aeronautical Science and Engineering,2012,3(2):195-200. |
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| Authors: | Tu Shaowei Huang Qiqing Guo Jin Xie Wei |
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| Institution: | (School of Aeronautics, Northwestern Polytechnieal University, Xi＇an 710072, China) |
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| Abstract: | Reseach of stress intensity factor on corner crack at rivet-filled countersink hole is of important significance for improving the safety of structure. Countersunk riveted joints are commonly used in aircraft structures and are the principle structures sensitive to fatigue cracking. Corner cracks initiated from both sides of a rivetfilled countersunk hole and an open hole with no riveting were analyzed using ANSYS, a finite element analysis package, to obtain the stress intensity factors （SIFs） along the crack fronts. The results indicate that the river filled process can significantly reduce the SIF of the corner cracks of countersunk holes and thus enhance the fa tigue resistance. |
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| Keywords: | countersink hole stress intensity factors finite element corner crack |
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