Model Correction Factor Method

Report based on Ph.D.-thesis (supervisor: Ove Ditlevsen)

Claus Christensen, Søren Randrup-Thomsen, Johannes Morsing Johannesen

    Research output: Book/ReportReportResearchpeer-review

    Abstract

    The model correction factor method is proposed as an alternative to traditional polynomial based response surface techniques in structural reliability considering a computationally time consuming limit state procedure as a 'black box'. The class of polynomial functions is replaced by a limit statebased on an idealized mechanical model to be adapted to the original limit state by the model correction factor. Reliable approximations are obtained by iterative use of gradient information on the original limit state function analogously to previous response surface approaches. However, the strength of the model correction factor method, is that in simpler form not using gradient information on the original limit state function or only using this information once, a drastic reduction of the number of limit state evaluation is obtained together with good approximations on the reliability. Methods for solving convergence in especially difficult cases are proposed.
    Original languageEnglish
    Number of pages152
    Publication statusPublished - 1997

    Cite this

    Christensen, C., Randrup-Thomsen, S., & Morsing Johannesen, J. (1997). Model Correction Factor Method: Report based on Ph.D.-thesis (supervisor: Ove Ditlevsen).
    Christensen, Claus ; Randrup-Thomsen, Søren ; Morsing Johannesen, Johannes. / Model Correction Factor Method : Report based on Ph.D.-thesis (supervisor: Ove Ditlevsen). 1997. 152 p.
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    abstract = "The model correction factor method is proposed as an alternative to traditional polynomial based response surface techniques in structural reliability considering a computationally time consuming limit state procedure as a 'black box'. The class of polynomial functions is replaced by a limit statebased on an idealized mechanical model to be adapted to the original limit state by the model correction factor. Reliable approximations are obtained by iterative use of gradient information on the original limit state function analogously to previous response surface approaches. However, the strength of the model correction factor method, is that in simpler form not using gradient information on the original limit state function or only using this information once, a drastic reduction of the number of limit state evaluation is obtained together with good approximations on the reliability. Methods for solving convergence in especially difficult cases are proposed.",
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    Christensen, C, Randrup-Thomsen, S & Morsing Johannesen, J 1997, Model Correction Factor Method: Report based on Ph.D.-thesis (supervisor: Ove Ditlevsen).

    Model Correction Factor Method : Report based on Ph.D.-thesis (supervisor: Ove Ditlevsen). / Christensen, Claus; Randrup-Thomsen, Søren; Morsing Johannesen, Johannes.

    1997. 152 p.

    Research output: Book/ReportReportResearchpeer-review

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    T2 - Report based on Ph.D.-thesis (supervisor: Ove Ditlevsen)

    AU - Christensen, Claus

    AU - Randrup-Thomsen, Søren

    AU - Morsing Johannesen, Johannes

    PY - 1997

    Y1 - 1997

    N2 - The model correction factor method is proposed as an alternative to traditional polynomial based response surface techniques in structural reliability considering a computationally time consuming limit state procedure as a 'black box'. The class of polynomial functions is replaced by a limit statebased on an idealized mechanical model to be adapted to the original limit state by the model correction factor. Reliable approximations are obtained by iterative use of gradient information on the original limit state function analogously to previous response surface approaches. However, the strength of the model correction factor method, is that in simpler form not using gradient information on the original limit state function or only using this information once, a drastic reduction of the number of limit state evaluation is obtained together with good approximations on the reliability. Methods for solving convergence in especially difficult cases are proposed.

    AB - The model correction factor method is proposed as an alternative to traditional polynomial based response surface techniques in structural reliability considering a computationally time consuming limit state procedure as a 'black box'. The class of polynomial functions is replaced by a limit statebased on an idealized mechanical model to be adapted to the original limit state by the model correction factor. Reliable approximations are obtained by iterative use of gradient information on the original limit state function analogously to previous response surface approaches. However, the strength of the model correction factor method, is that in simpler form not using gradient information on the original limit state function or only using this information once, a drastic reduction of the number of limit state evaluation is obtained together with good approximations on the reliability. Methods for solving convergence in especially difficult cases are proposed.

    M3 - Report

    BT - Model Correction Factor Method

    ER -

    Christensen C, Randrup-Thomsen S, Morsing Johannesen J. Model Correction Factor Method: Report based on Ph.D.-thesis (supervisor: Ove Ditlevsen). 1997. 152 p.