Long-Term Extreme Response Analysis of Marine Structures Using Inverse SORM-Reference-Cited by-同舟云学术

Long-Term Extreme Response Analysis of Marine Structures Using Inverse SORM

Published:2018-05-02 Issue:5 Volume:140 Page:
ISSN:0892-7219
Container-title:Journal of Offshore Mechanics and Arctic Engineering
language:en
Short-container-title:

Author:

Giske Finn-Idar G.¹,Leira Bernt Johan²,Øiseth Ole³

Affiliation:

1. NTNU/Multiconsult, 7491/Oslo, Trondheim 0213, Norway e-mail:

2. Department of Marine Technology NTNU, Trondheim 7491, Norway e-mail:

3. Department of Structural Engineering NTNU, Trondheim 7491, Norway e-mail:

Abstract

In this paper, the first-order reliability method (FORM) found in connection with structural reliability analysis is first used in an inverse manner to efficiently obtain an approximate solution of the full long-term extreme response of marine structures. A new method is then proposed where the second-order reliability method (SORM) is used to improve the accuracy of the approximation, resulting in an inverse SORM (ISORM) approach. This method is compared with exact results obtained using full numerical integration. The new method is seen to achieve significantly improved accuracy, yet keep the number of required short-term response analyses within acceptable levels.

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Link

http://asmedigitalcollection.asme.org/offshoremechanics/article-pdf/doi/10.1115/1.4039718/6248094/omae_140_05_051601.pdf

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