| 用三维随机有限元寻求结构的最大可能失效模式 |
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| 引用本文： | 刘宁,李同春.用三维随机有限元寻求结构的最大可能失效模式[J].水利学报,1996,13(3):36-43. |
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| 作者姓名： | 刘宁 李同春 |
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| 作者单位： | 河海大学工程力学系，清华大学水利水电工程系 |
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| 摘 要： | 本文首次提出了“条件可靠指标”的概念，并以此作为寻求结构最大可能失效模式的判断依据，较好地考虑了失效单元功能函数间相关性的影响。对于多个失效事件交集的计算，作者采用基于三维随机有限元的逐步等效线性化Ｊｏｈｎｓｏｎ求交法。算例表明，本文方法具有一定的实用价值。
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| 关 键 词： | 结构静力学 有限元 失效模式 可靠度 |
A method for searching the most possible failure mode by on 3-D SFEM |
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| Liu Ning, Li Tongchun, Zhuo Jiashou.A method for searching the most possible failure mode by on 3-D SFEM[J].Journal of Hydraulic Engineering,1996,13(3):36-43. |
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| Authors: | Liu Ning Li Tongchun Zhuo Jiashou |
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| Affiliation: | Hobai University |
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| Abstract: | Conditional reliability index is suggested and used as the judgement rule for searching the most possible failure mode. Correlation between failure element performance functions is efficiently taken into account. In the calculation of intersection probability, the step by step linearized Johnson method based on 3-D SFEM is proposed. Example indicate that the suggested method is useful for practical engineering. |
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| Keywords: | SFEM failure mode failure probability conditional probability reliability |
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