Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Zhenzhou Lu"'
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability. 236:1037-1056
In the time-variant systems, random variables, stochastic processes, and time parameter are regarded as the inputs of time-variant computational model. This results in an even more computationally expensive model what makes the time-variant reliabili
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
Autor:
Zhenzhou Lu, Kai Cheng
Publikováno v:
Reliability Engineering & System Safety. 188:310-319
Time-variant reliability analysis aims at estimating the probability that an engineering system successfully performs intended missions over a certain period of time under various sources of uncertainty. In order to perform the time-variant reliabili
Autor:
Yan Shi, Zhenzhou Lu
Publikováno v:
International Journal of Mechanics and Materials in Design. 15:521-537
Aiming at analyzing the safety of the dynamic structure involving both input random variables and the interval ones, a new dynamic reliability analysis model is presented by constructing a second level limit state function. Two steps are involved in
Publikováno v:
Engineering Structures. 167:74-83
Models with multivariate output are often used in practical structural systems. Multivariate global sensitivity analysis (GSA) plays an important role in quantifying the contribution of uncertainty in the model input to the output, which is quite use
Publikováno v:
Mechanical Systems and Signal Processing. 100:846-862
For identifying the cross-covariance source of dynamic output at each time instant for structural system involving both input random variables and stochastic processes, a global dynamic sensitivity (GDS) technique is proposed. The GDS considers the e
Publikováno v:
Mechanical Systems and Signal Processing. 156:107630
In this paper, a fully decoupled simulation method is proposed for reliability-based design optimization (RBDO) based on thermodynamic integration and parallel tempering (TIPT). We show that the failure probability function and its gradient can be ob
Publikováno v:
International Journal of Systems Science: Operations & Logistics. 5:268-281
Traditionally, only the uncertainty of input variables is considered in sensitivity analysis. In this paper, a new sensitivity analysis technique based on the variance-based sensitivity method is proposed for input variables through considering the u
Publikováno v:
Structural and Multidisciplinary Optimization. 55:1439-1451
Time-dependent reliability (failure probability) aims at measuring the probability of the normal (abnormal) operation for structure/mechanism within the given time interval. To analyze the maximum probable life time under a required time-dependent fa
Publikováno v:
Applied Mathematical Modelling. 40:5703-5716
The uncertainties affecting the capability of the structural system are generally classified into aleatory uncertainty and epistemic uncertainty. In this study, aleatory uncertainty is modeled by probability theory, and epistemic uncertainty is model