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    Systems reliability of offshore structures including fatigue and extreme wave loading

    New search for: Karamchandani, A.
    New search for: Dalane, J.I.
    New search for: Bjerager, P.

    Abstract Traditionally, the focus of systems reliability analysis has been on estimating the reliability under either fatigue loading or extreme environmental loading. However, for many offshore structures, a combination of these two sources of risk may be more critical, e.g. initial failures may occur in fatigue and subsequent collapse under an extreme wave. In this paper, a probabilistic formulation for such a sequence of combined failures is presented. A formulation for a sequence of failures under an extreme wave, with realistic failure criteria for offshore structures, is also presented. With these formulations, it is possible to account for both fatigue and extreme wave failures. An application of such a unified approach to a steel jacket platform is presented. It is found that, for an individual member, the most probable cause of failure is fatigue, but for overall structural failure, overload and a combination of fatigue and overload are more important.

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    Systems reliability of offshore structures including fatigue and extreme wave loading

    New search for: Karamchandani, A.
    New search for: Dalane, J.I.
    New search for: Bjerager, P.

    Abstract Traditionally, the focus of systems reliability analysis has been on estimating the reliability under either fatigue loading or extreme environmental loading. However, for many offshore structures, a combination of these two sources of risk may be more critical, e.g. initial failures may occur in fatigue and subsequent collapse under an extreme wave. In this paper, a probabilistic formulation for such a sequence of combined failures is presented. A formulation for a sequence of failures under an extreme wave, with realistic failure criteria for offshore structures, is also presented. With these formulations, it is possible to account for both fatigue and extreme wave failures. An application of such a unified approach to a steel jacket platform is presented. It is found that, for an individual member, the most probable cause of failure is fatigue, but for overall structural failure, overload and a combination of fatigue and overload are more important.

    Access

    Check access
    Check availability in my library
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    Systems reliability of offshore structures including fatigue and extreme wave loading

    New search for: Karamchandani, A.
    New search for: Dalane, J.I.
    New search for: Bjerager, P.

    Abstract Traditionally, the focus of systems reliability analysis has been on estimating the reliability under either fatigue loading or extreme environmental loading. However, for many offshore structures, a combination of these two sources of risk may be more critical, e.g. initial failures may occur in fatigue and subsequent collapse under an extreme wave. In this paper, a probabilistic formulation for such a sequence of combined failures is presented. A formulation for a sequence of failures under an extreme wave, with realistic failure criteria for offshore structures, is also presented. With these formulations, it is possible to account for both fatigue and extreme wave failures. An application of such a unified approach to a steel jacket platform is presented. It is found that, for an individual member, the most probable cause of failure is fatigue, but for overall structural failure, overload and a combination of fatigue and overload are more important.

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    Title:

    Systems reliability of offshore structures including fatigue and extreme wave loading

    Contributors:

    Karamchandani, A. (author) / Dalane, J.I. (author) / Bjerager, P. (author)

    Published in:

    Marine Structures ; 4 ; 353-379

    Publication date:

    1991-01-01

    Size:

    27 pages

    ISSN:

    0951-8339

    DOI:

    https://doi.org/10.1016/0951-8339(91)90011-Y

    Type of media:

    Article (Journal)

    Type of material:

    Electronic Resource

    Language:

    English

    Keywords:

    fatigue , overload , probabilistic analysis , structural reliability

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