کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6758111 511346 2016 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Probabilistic fatigue analysis of marine structures using the univariate dimension-reduction method
ترجمه فارسی عنوان
تجزیه و تحلیل خستگی احتمالی سازه های دریایی با استفاده از روش کاهش ابعاد یکنواخت
کلمات کلیدی
خستگی احتمالی، کاهش یکنواخت ابعاد، تجزیه و تحلیل خستگی کارآمد،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Probabilistic fatigue analysis of offshore structures requires the numerical simulation of a huge number of loading cases to compute the long-term multi-dimensional integral associated to the fatigue damage assessment. This paper proposes the implementation of the univariate dimension-reduction method developed by Rahman and Xu [1] in order to compute the long-term fatigue damage more efficiently. This method is particularly attractive because it reduces significantly the number of simulations by decomposing the N-dimensional integral associated to expected long-term fatigue damage assessment into the sum of N one-dimensional integrals. In addition, this paper compares the univariate-dimension reduction method with the brute force direct integration methodology and other methods based on Taylor expansions, such as perturbation approach and asymptotic expansion method discussed by Low and Cheung [2]. Two comprehensive examples are included to show the effectiveness of the method. At first, the performance of the univariate dimension-reduction method is evaluated by assessing the fatigue damage of a theoretical structure represented by a single stress response amplitude operator (RAO). Then, in order to show a case of practical application, the fatigue damage is evaluated for a Steel Lazy Wave Riser (SLWR) connected to an FPSO in a water depth of 2200 m.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Structures - Volume 50, November 2016, Pages 189-204
نویسندگان
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