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    Explicit Model of Outcrossing Rate for Time-Variant Reliability

    Source: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering:;2021:;Volume ( 008 ):;issue: 001::page 04021087
    Author:
    Xiang-Wei Li
    ,
    Yan-Gang Zhao
    ,
    Xuan-Yi Zhang
    ,
    Zhao-Hui Lu
    DOI: 10.1061/AJRUA6.0001204
    Publisher: ASCE
    Abstract: The usual approach to time-variant reliability problems is PHI2 method, which defines the outcrossing rate as a two-component parallel system problem and calculates it through a two-dimensional numerical integration. To improve the computational efficiency, an explicit model of outcrossing rate is proposed in this study, which is referred to as EPHI2. Based on the proposed explicit model, EPHI2 method avoids the numerical integration required in PHI2 method. Comparison between the outcrossing rates obtained by PHI2 and EPHI2 methods was conducted, and EPHI2 method was proved to have enough accuracy for calculating outcrossing rates. The application of EPHI2 method for time-variant reliability analysis was investigated through three numerical examples. It is found that the proposed EPHI2 method is more efficient than PHI2 method in time-variant reliability analysis, with the results nearly the same.
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      Explicit Model of Outcrossing Rate for Time-Variant Reliability

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4282723
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    • ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering

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    contributor authorXiang-Wei Li
    contributor authorYan-Gang Zhao
    contributor authorXuan-Yi Zhang
    contributor authorZhao-Hui Lu
    date accessioned2022-05-07T20:39:41Z
    date available2022-05-07T20:39:41Z
    date issued2021-12-17
    identifier otherAJRUA6.0001204.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4282723
    description abstractThe usual approach to time-variant reliability problems is PHI2 method, which defines the outcrossing rate as a two-component parallel system problem and calculates it through a two-dimensional numerical integration. To improve the computational efficiency, an explicit model of outcrossing rate is proposed in this study, which is referred to as EPHI2. Based on the proposed explicit model, EPHI2 method avoids the numerical integration required in PHI2 method. Comparison between the outcrossing rates obtained by PHI2 and EPHI2 methods was conducted, and EPHI2 method was proved to have enough accuracy for calculating outcrossing rates. The application of EPHI2 method for time-variant reliability analysis was investigated through three numerical examples. It is found that the proposed EPHI2 method is more efficient than PHI2 method in time-variant reliability analysis, with the results nearly the same.
    publisherASCE
    titleExplicit Model of Outcrossing Rate for Time-Variant Reliability
    typeJournal Paper
    journal volume8
    journal issue1
    journal titleASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
    identifier doi10.1061/AJRUA6.0001204
    journal fristpage04021087
    journal lastpage04021087-11
    page11
    treeASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering:;2021:;Volume ( 008 ):;issue: 001
    contenttypeFulltext
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