A convex model approach for structure non-probabilistic reliability analysis
A convex model approach for structure non-probabilistic reliability analysis
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DOI：
10.1177/1748006x17710817
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发表时间：
2017-07
期刊：
影响因子：
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通讯作者：
Zhengmao Yang;Yanjuan Zhang;W. Meng;Jianghui Cai
中科院分区：
文献类型：
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作者：
Zhengmao Yang;Yanjuan Zhang;W. Meng;Jianghui Cai
本文提出了一种新的研究桥式起重机非概率可靠性的方法，即集合论的凸模型方法。针对桥式起重机的金属结构体系，应用有限元法，得到结构危险点的应力响应。然后，得到结构危险点和不确定参数的应力响应样本。最后，基于支持向量机，将系统的结构隐式回归函数替换为结构非概率可靠度的显式表达式。结果表明，该方法是解决金属结构非概率可靠性问题的有效方法。
In this article, a novel approach, that is, convex model method of set theory, is proposed to investigate the non-probabilistic reliability of bridge crane. Considering the metal structure system of the bridge crane, the finite element method is applied to obtain the stress response of the structure dangerous point. Then, the sample of stress response of the structure danger point and uncertain parameters are obtained. Finally, based on support vector machines, the structure implicit regression function of the system is replaced by explicit expression that calculates the non-probabilistic reliability of the structure. Results show that this approach is useful and efficient to solve the problem of non-probabilistic reliability in the metal structure.