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Andenordens Pålidelighedsmetode (SORM)

Andenordens Pålidelighedsmetode (SORM) er en udvidelse af FORM, der forbedrer estimater for svigtssandsynlighed ved at tage højde for krumningen af grænsetilstandsoverfladen ved designpunktet. SORM blev introduceret af Fiessler, Neumann og Rackwitz i 1979 og giver mere nøjagtige tilnærmelser for ikke-lineære svigtsoverflader, samtidig med at den forbliver beregningsmæssigt effektiv. Den er blevet standardforbedringen, når FORM's nøjagtighed er utilstrækkelig.

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Kilder

  1. Fiessler, B., Neumann, H. J., & Rackwitz, R. (1979). Quadratic limit states in structural reliability. Journal of the Engineering Mechanics Division, 105(4), 661-676. DOI: 10.1061/jmcea3.0002512
  2. Breitung, K. (1984). Asymptotic approximations for multinormal integrals. Journal of Engineering Mechanics, 110(3), 357-366. DOI: 10.1061/(ASCE)0733-9399(1984)110:3(357)
  3. Hohenbichler, M., & Rackwitz, R. (1988). Improvement of second-order reliability estimates by importance sampling. Journal of Engineering Mechanics, 114(12), 2195-2199. DOI: 10.1061/(ASCE)0733-9399(1988)114:12(2195)
  4. Melchers, R. E. (2002). Structural Reliability Analysis and Prediction (2nd ed.). John Wiley & Sons. link

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ScholarGate. (2026, June 3). Second-Order Reliability Method (SORM). ScholarGate. https://scholargate.app/da/reliability-engineering/second-order-reliability-method

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ScholarGateSecond-Order Reliability Method (Second-Order Reliability Method (SORM)). Hentet 2026-06-15 fra https://scholargate.app/da/reliability-engineering/second-order-reliability-method · Datasæt: https://doi.org/10.5281/zenodo.20539026