Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Zhenzhou Lu"'
Publikováno v:
Engineering with Computers. 38:3595-3610
Failure-probability-based global sensitivity (FP-GS) analysis can measure the effect of the input uncertainty on the failure probability. The state-of-the-art for estimating the FP-GS are less efficient for the rare failure event and the implicit per
Autor:
Zhenzhou Lu, Chunyan Ling
Publikováno v:
Structural and Multidisciplinary Optimization. 63:1609-1631
Structural reliability analysis aims at computing failure probability with respect to prescribed performance function. To efficiently estimate the structural failure probability, a novel two-stage meta-model importance sampling based on the support v
Autor:
Zhenzhou Lu, Bofan Dong
Publikováno v:
Structural and Multidisciplinary Optimization. 63:2613-2635
In the presence of random and interval hybrid uncertainty (RI-HU), the safety degree of the structure system can be quantified by the upper and lower bounds of failure probability. However, there is a lack of efficient methods for estimating failure
Publikováno v:
Structural and Multidisciplinary Optimization. 63:2125-2140
Failure credibility is popular in measuring safety degree of structure under fuzzy uncertainty, but the heavy computational cost is still a challenge in estimating the failure credibility. To alleviate this issue, an iterative method combining adapti
Publikováno v:
Structural and Multidisciplinary Optimization. 63:551-573
In the presence of both random and interval hybrid uncertainty (RI-HU), investigating global reliability sensitivity (GRS) can identify the effect of random input on the structural safety globally. To this end, this work establishes the GRS index mod
Publikováno v:
Structural and Multidisciplinary Optimization. 63:1029-1044
Time-dependent failure possibility (TDFP) can reasonably measure the safety degree of time-dependent structure under fuzzy uncertainty, but there lacks design optimization under the constraint of TDFP for the trade-off of the performance and the safe
Publikováno v:
Structural and Multidisciplinary Optimization. 62:2881-2900
Most of the existing methods for estimating time-dependent failure credibility (TDFC) are based on optimization algorithms, which may result in a heavy burden on the computational cost and accuracy issue related to the local optimization. In order to
Publikováno v:
Structural and Multidisciplinary Optimization. 62:2297-2321
Directly solving time-dependent reliability-based design optimization (TRBDO) with aleatory and epistemic uncertainties is time-demanding, which limits its engineering application. By treating aleatory and epistemic uncertainties with probability and
Publikováno v:
Structural and Multidisciplinary Optimization. 62:851-871
Time-dependent global reliability sensitivity can quantify the effect of input variables in their whole distribution ranges on the time-dependent failure probability. To efficiently estimate it to help researchers control the time-dependent failure p
Publikováno v:
Structural and Multidisciplinary Optimization. 62:771-785
Failure credibility is popular in measuring safety degree of structure under fuzzy uncertainty due to its excellent property of self-duality. Existing methods for estimating failure credibility can be mainly divided into two categories, i.e., the sim