کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
307470 513365 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A fuzzy reliability approach for structures based on the probability perspective
ترجمه فارسی عنوان
رویکرد قابلیت اطمینان فازی برای ساختارهای مبتنی بر دیدگاه احتمالی
کلمات کلیدی
متغیر فازی، فاصله فازی، تابع عضویت، سطح عضویت، نظریه احتمالات، نظریه احتمالی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• The traditional failure possibility is explained from the probability perspective.
• A novel approach is proposed to measure the safety of the fuzzy structure.
• The high-efficient solution for the proposed approach is established.

To investigate fuzzy reliability problem deeply, the traditional failure possibility of the structures with fuzzy variables is explained from the probability perspective. By treating the membership levels of all fuzzy variables as the same random variable following standard uniform distribution, it is verified in theory that the failure probability where the membership levels follow the same standard uniform distribution equals to the traditional failure possibility. Furthermore, by treating the membership levels of the different fuzzy variables as the independent standard uniform distributions, a novel fuzzy reliability model is proposed to measure the safety of the structures with fuzzy variables, which provides a new perspective to analyze the failure mechanism of the structures with fuzzy variables. Comparing the principles and results of the examples with the traditional failure possibility, the proposed model based on the probability perspective utilizes available information more adequately and the results are much closer to the engineering practices, while the traditional approach is too conservative. Moreover, according to the feature of the established fuzzy reliability model, a highly efficient solution based on the kriging surrogate model method is proposed to analyze the reliability of the structure with fuzzy variables.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Structural Safety - Volume 54, May 2015, Pages 10–18
نویسندگان
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