کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
806158 1468215 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Partial safety factor calibration from stochastic finite element computation of welded joint with random geometries
ترجمه فارسی عنوان
کالیبراسیون ضریب ایمنی جزئی از محاسبات المان محدود تصادفی اتصال جوش داده شده با هندسه تصادفی
کلمات کلیدی
هندسه تصادفی. اتصالات جوش داده شده؛ سازه های دریایی؛ خستگی؛ فاکتور تمرکز تنش؛ ضریب ایمنی جزئی؛ محاسبات تصادفی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• Numerical computation of stress concentration factor with random geometry of weld.
• Real data are used for probabilistic modelling.
• Identification of partial safety factor from SFEM computation in case of random geometries.

Welded joints are used in various structures and infrastructures like bridges, ships and offshore structures, and are submitted to cyclic stresses. Their fatigue behaviour is an industrial key issue to deal with and still offers original research subjects. One of the available methods relies on the computing of the stress concentration factor. Even if some studies were previously driven to evaluate this factor onto some cases of welded structures, the shape of the weld joint is generally idealized through a deterministic parametric geometry. Previous experimental works however have shown that this shape plays a key role in the lifetime assessment. We propose in this paper a methodology for computing the stress concentration factor in presence of random geometries of welded joints. In view to make the results available by engineers, this method merges stochastic computation and semi-probabilistic analysis by computing partial safety factors with a dedicated method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reliability Engineering & System Safety - Volume 155, November 2016, Pages 44–54
نویسندگان
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