An efficient structural uncertainty propagation method based on evidence domain analysis
An efficient structural uncertainty propagation method based on evidence domain analysis
复制标题
基于证据域分析的高效结构不确定性传播方法
DOI:
10.1016/j.engstruct.2019.05.044
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发表时间:
2019-09
影响因子:
5.5
通讯作者:
Zhang Lianyi
中科院分区:
文献类型:
--
作者:
Cao Lixiong;Liu Jie;Wang Qingyun;Jiang Chao;Zhang Lianyi
Evidence theory can be used for propagation analysis of structural response with various uncertainties because of its much more flexible and universal framework. However, the discrete characteristic and the ambiguity measure of the propagated result have severely influenced the practicability of evidence theory. Because of the basic probability assignment (BPA), the evidence domain is a countable region composed of all focal elements. Hence, in this study, an efficient uncertainty propagation method is proposed through evidence domain analysis. A multiple linear segment approximation for limit state equation (LSE) rather than structural performance function is firstly constructed, so the support degree of each focal element is directly judged in evidence domain. Then, the belief (Bel) measurement and plausibility (Pl) measurement are calculated by the positional relation of each focal element in the uncertain variable domain without involving response domain. Meanwhile, a volume ratio that can represent the proportion of focal element partly supporting event is calculated by utilizing the approximate LSE. Therefore, a maximum entropy probability measurement between the Bel and Pl can be provided using the volume ratio. One numerical example and two engineering applications are investigated to demonstrate the effectiveness of the proposed method.
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影响因子:
4.8
作者:
Bai Y. C.;Han X.;Jiang C.;Liu J.
通讯作者:
Liu J.
DOI:
10.1007/978-3-540-36212-8
发表时间:
2003-05
期刊:
--
影响因子:
--
作者:
Jawaharlal Karmeshu
通讯作者:
Jawaharlal Karmeshu
影响因子:
--
作者:
Hao Zhang;R. Mullen;R. Muhanna
通讯作者:
Hao Zhang;R. Mullen;R. Muhanna
影响因子:
20.6
作者:
JAYNES, ET
通讯作者:
JAYNES, ET
影响因子:
2.5
作者:
I. Elishakoff;P. Elisseeff;S. Glegg
通讯作者:
I. Elishakoff;P. Elisseeff;S. Glegg