| 复杂载荷作用下结构的可靠性研究 |
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| 引用本文： | 李锋,孟广伟,周立明,彭惠芬.复杂载荷作用下结构的可靠性研究[J].哈尔滨工业大学学报,2011(Z1):295-298. |
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| 作者姓名： | 李锋 孟广伟 周立明 彭惠芬 |
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| 作者单位： | 吉林大学机械科学与工程学院;东北石油大学机械科学与工程学院 |
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| 基金项目： | 吉林省科技厅基金(20090540);吉林大学科学前沿与交叉学科创新项目(200903166) |
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| 摘 要： | 针对以往的结构可靠性分析过程中,将结构的随机动载和静载单独考虑与实际工程结构不相符的情况,提出随机动载荷和静载作用下结构的可靠性模型,先利用一次二阶矩法和随机有限元法计算出随机动载和静载单独作用下结构的可靠度,然后将结构视为在随机动载和静载分别作用下的串联系统,求出随机动载和静载共同作用下结构的可靠度.算例表明,本文简单实用,为工程应用提供了一种适用的估算方法.
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| 关 键 词： | 疲劳 可靠性 随机有限元法 一次二阶矩法 |
Reliability for structures under complex load |
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| LI Feng,MENG Guang-wei,ZHOU Li-ming,PENG Hui-fen.Reliability for structures under complex load[J].Journal of Harbin Institute of Technology,2011(Z1):295-298. |
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| Authors: | LI Feng MENG Guang-wei ZHOU Li-ming PENG Hui-fen |
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| Affiliation: | 1,2(1.College of Mechanical Science and Engineering,Jilin University,Changchun 130022,China, 2.College of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,China) |
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| Abstract: | Aiming at the defect that random load and static load were considered separately in the process of reliability analysis,a reliability analysis model was presented considering both the random load and static load.Reliability analysis was made respectively for structures under random load and static load based on first order reliability method and stochastic finite element method.Then treat the structure under both random load and static load as a series system of the structure under random load and static load respectively,the failure probability of the structure was calculated.A numerical example was performed for a plate with a central hole under random load and static load.The result shows that the suggested method is feasible and applicable. |
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| Keywords: | Fatigue Reliability Stochastic finite element method First order reliability method |
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