UPDATING FIRST-AND SECOND-ORDER RELIABILITY ESTIMATES BY IMPORTANCE SAMPLING

First-and second-order reliability methods have turned out to be efficient practical tools in structural reliability for direct probabilistic design or for the development of probability-based design codes. These methods are approximate but certain Monte Carlo techniques with importance sampling can...

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Veröffentlicht in:Doboku Gakkai Ronbunshu 1988/04/20, Vol.1988(392), pp.53-59
Hauptverfasser: FUJITA, Munehisa, RACKWITZ, Rüdiger
Format: Artikel
Sprache:eng
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Zusammenfassung:First-and second-order reliability methods have turned out to be efficient practical tools in structural reliability for direct probabilistic design or for the development of probability-based design codes. These methods are approximate but certain Monte Carlo techniques with importance sampling can make reliability estimates arbitrarily accurate. Three different methods are presented and tested at a suitable example with respect to their numerical efficiency. It is found that a method which also uses curvature information in the so-called most likely failure point usually is preferable to the alternatives if an update of first-or second-order estimates is necessary. However, that method becomes inadequate for very high problem dimensions and/or large failure probabilities.
ISSN:0289-7806
1882-7187
DOI:10.2208/jscej.1988.392_53