کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
499120 863028 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reliability-based optimization of stochastic systems using line search
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Reliability-based optimization of stochastic systems using line search
چکیده انگلیسی

This contribution presents an approach for solving reliability-based optimization problems involving structural systems under stochastic loading. The associated reliability problems to be solved during the optimization process are high-dimensional (1000 or more random variables). A standard gradient-based algorithm with line search is used in this work. Subset simulation is adopted for the purpose of estimating the corresponding failure probabilities. The gradients of the failure probability functions are estimated by an approach based on the local behavior of the performance functions that define the failure domains. Numerical results show that only a moderate number of reliability estimates has to be performed during the entire design process. Two numerical examples showing the effectiveness of the approach reported herein are presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 198, Issues 49–52, 1 November 2009, Pages 3915–3924
نویسندگان
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