| Reliability analysis of stochastic structural system considering static strength, stiffness and fatigue |
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| 引用本文： | AN WeiGuang1,ZHAO WeiTao2 & AN Hai1 1 Department of Aerospace Engineering,Harbin Engineering University,Harbin 150001,China, 2 College of Aeronautics and Astronautics,Shenyang Institute of Aeronautical Engineering,Shenyang 110034,China. Reliability analysis of stochastic structural system considering static strength, stiffness and fatigue[J]. 中国科学G辑(英文版), 2007, 50(3): 357-369. DOI: 10.1007/s11433-007-0035-9 |
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| 作者姓名： | AN WeiGuang1 ZHAO WeiTao2 & AN Hai1 1 Department of Aerospace Engineering Harbin Engineering University Harbin 150001 China 2 College of Aeronautics and Astronautics Shenyang Institute of Aeronautical Engineering Shenyang 110034 China |
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| 作者单位： | AN WeiGuang1，ZHAO WeiTao2 & AN Hai1 1 Department of Aerospace Engineering，Harbin Engineering University，Harbin 150001，China; 2 College of Aeronautics and Astronautics，Shenyang Institute of Aeronautical Engineering，Shenyang 110034，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | Multi-failures are possible to appear in the process of using the structural system, such as dead load failure, fatigue failure and stiffness failure. The expression of residual resistance is given based on the impact of random crack propagation in- duced by the fatigue load on the critical limit stress and section modulus in this paper. The failure modes of every element of the structural system are analyzed under dead and fatigue loads, and the influence of the correlation of failure modes on reliability of the element is considered. Failure mechanism and the correlation of failure modes under dead and fatigue loads are discussed, and the method of reli- ability analysis considering static strength, fatigue and stiffness is given. A nu- merical example is analyzed, which indicates that the failure probability is different for different use life and the influence of dead and fatigue loads on reliability of the structural system is different as well. This method of reliability analysis, in the pa- per, is better than the method only considering a single factor (or static strength, or fatigue, or stiffness, etc.) in the case of practical engineering.
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| 收稿时间： | 2006-02-24 |
| 修稿时间： | 2007-03-02 |
Reliability analysis of stochastic structural system considering static strength,stiffness and fatigue |
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| An WeiGuang,Zhao WeiTao,An Hai. Reliability analysis of stochastic structural system considering static strength,stiffness and fatigue[J]. Science in China(Physics Astronomy), 2007, 50(3): 357-369. DOI: 10.1007/s11433-007-0035-9 |
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| Authors: | An WeiGuang Zhao WeiTao An Hai |
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| Affiliation: | 1. Department of Aerospace Engineering, Harbin Engineering University, Harbin 150001, China
2. College of Aeronautics and Astronautics, Shenyang Institute of Aeronautical Engineering, Shenyang,110034, China |
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| Abstract: | Multi-failures are possible to appear in the process of using the structural system, such as dead load failure, fatigue failure and stiffness failure. The expression of residual resistance is given based on the impact of random crack propagation in- duced by the fatigue load on the critical limit stress and section modulus in this paper. The failure modes of every element of the structural system are analyzed under dead and fatigue loads, and the influence of the correlation of failure modes on reliability of the element is considered. Failure mechanism and the correlation of failure modes under dead and fatigue loads are discussed, and the method of reli- ability analysis considering static strength, fatigue and stiffness is given. A nu- merical example is analyzed, which indicates that the failure probability is different for different use life and the influence of dead and fatigue loads on reliability of the structural system is different as well. This method of reliability analysis, in the pa- per, is better than the method only considering a single factor (or static strength, or fatigue, or stiffness, etc.) in the case of practical engineering. |
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| Keywords: | structural system reliability dead failure fatigue failure stiffness failure failure mechanism correlation |
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