Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Zhenzhou Lu"'
Publikováno v:
Structures. 35:373-387
Adaptive Kriging combined with Monte Carlo simulation (AK-MCS) is popularly used to estimate the failure probability, but its candidate sample pool (CSP) size should be large enough to guarantee the accuracy of failure probability estimation, especia
Publikováno v:
Fuzzy Sets and Systems. 424:170-184
To improve the computational efficiency of the fuzzy simulation in estimating failure possibility of the structure containing fuzzy uncertainty, a fuzzy importance sampling method is proposed in this paper. In the proposed method, the optimal importa
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, 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:
Engineering Optimization. 53:1613-1631
The failure probability-based global sensitivity index (FPGSI) analyses how the model inputs affect the failure probability of a model. It is useful for guiding reliability-based design optimizatio...
Publikováno v:
Structural and Multidisciplinary Optimization. 61:1107-1121
Reliability measures the ability that the structure finishes its intended function without failures by taking uncertainties into account. Reliability sensitivity commonly is defined as the partial derivative of the failure probability with respect to
Publikováno v:
Engineering Optimization. 52:1720-1742
With the aim of efficiently estimating the upper bound of time-dependent failure probability for the time-dependent reliability problem involving random and interval inputs (RI-TDFP), an extended c...
Autor:
Zhenzhou Lu, Chunyan Ling
Publikováno v:
Applied Mathematical Modelling. 77:1820-1841
For the time-variant hybrid reliability problem under random and interval uncertainties, the upper bound of time-variant failure probability, as a conservative index to quantify the safety level of the structure, is highly concerned. To efficiently e
Publikováno v:
Structural and Multidisciplinary Optimization. 61:1589-1602
By the average absolute difference between the unconditional failure probability and the conditional one on fixing an input at its realization, the failure-probability-based-sensitivity (FP-S) is defined to quantify the effect of the fixed input on t
Publikováno v:
Reliability Engineering & System Safety. 189:99-108
Borgonovo moment-independent sensitivity index (BMSI) was proposed to measure the sensitivity of model inputs according to the whole distribution of model output not only a specific moment. The main computational difficulty of the BMSI is to estimate