کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6741180 | 504389 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical buckling analysis of large suction caissons for wind turbines on deep water
ترجمه فارسی عنوان
تجزیه و تحلیل لرزش عددی از کاسسون های مکش بزرگ برای توربین های بادی در آب های عمیق
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کلمات کلیدی
خم شدن بی ثباتی، پایه بیل، کاسون ساکشن،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Using large suction caissons for offshore wind turbines is an upcoming cost-effective technology also referred to as bucket foundations. During operation, the monopod bucket foundation is loaded by a large overturning moment from the wind turbine and the wave loads. However, during installation the suction caisson is loaded by external pressure (internal suction) due to evacuation of water inside the bucket and vertical forces due to gravity. The risk of structural buckling during installation of large-diameter suction caissons is addressed using numerical methods. Initial imperfect geometries are introduced, based on the buckling mode shapes from a linear eigenvalue buckling analysis. Different imperfect geometries are introduced to reveal how sensitive the buckling load is to these imperfections. Including the first 21 mode shapes as imperfect geometries will reduce the buckling pressure compared to only considering mode 1. The results of the finite element analysis are compared with current standards for evaluating buckling loads.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 57, December 2013, Pages 443-452
Journal: Engineering Structures - Volume 57, December 2013, Pages 443-452
نویسندگان
S. Madsen, L.V. Andersen, L.B. Ibsen,