| 具裂纹的桁架结构系统静强度可靠性分析 |
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| 引用本文： | 赵维涛,张卫平,许晓丰.具裂纹的桁架结构系统静强度可靠性分析[J].上海航天,2008,25(6). |
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| 作者姓名： | 赵维涛 张卫平 许晓丰 |
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| 作者单位： | 沈阳航空工业学院,辽宁,沈阳,110136 |
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| 摘 要： | 根据具裂纹结构的剩余截面模量和刺余极限应力,分别在屈服与断裂失效条件下建立了元件的安全余量,并以两者串联的失效概率为该元件的失效概率,分析了结构系统的失效过程.算例表明:不同裂纹长度元件的失效形式可不同,结构系统主要失效路径中元件屈服与断裂失效同时存在.认为有裂纹结构的可靠性分析需同时考虑元件的屈服与断裂失效.
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| 关 键 词： | 有裂纹结构 结构可靠性 屈服失效 断裂失效 相关性 |
Static Strength Reliability Analysis of Truss Structural System with Crack |
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| ZHAO Wei-tao,ZHANG Wei-ping,XU Xiao-feng.Static Strength Reliability Analysis of Truss Structural System with Crack[J].Aerospace Shanghai,2008,25(6). |
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| Authors: | ZHAO Wei-tao ZHANG Wei-ping XU Xiao-feng |
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| Institution: | ZHAO Wei-tao,ZHANG Wei-ping,XU Xiao-feng(Shenyang Institute of Aeronautical Engineering,Shenyang Liaoning 110136,China) |
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| Abstract: | According to the residual section module and residual ultimate stress of structure system with crack,the safety margin of element was established under the yield failure and fracture failure in this paper.The structural system failure process was analyzed when failure probability of two safety margins in series was served as the failure probability of the element.The results of examples showed that the failure form with different crack length could be different,and failure forms of elements in the significa... |
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| Keywords: | Structure with crack Structural reliability Yield failure Fracture failure Relativity |
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