کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
285445 509197 2011 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimum design of steel frames using a multiple-deme GA with improved reproduction operators
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Optimum design of steel frames using a multiple-deme GA with improved reproduction operators
چکیده انگلیسی

In this paper, the performance of the genetic algorithm is improved by introducing some new crossover and mutation operators. The new operators are incorporated into a multiple-deme genetic algorithm in which population is divided into subpopulations and communication between different demes is established through migration of individuals, enhancing diversity and resulting in better solutions. This algorithm is applied to the minimum weight design of steel frames subjected to actual strength and ductility constraints of AISC–ASD specifications as well as other serviceability and constructability constraints. The efficiency of the proposed method is demonstrated through optimising two benchmark problems including a three-bay, three-storey steel frame and a five-bay, 22-storey special steel frame. Significant improvements in the optimum solutions are obtained with reduced number of finite element analyses, resulting in less computational effort.


► Novel crossover and mutation operators are shown to markedly improve GA design optimisation of steel moment frames.
► It is shown that the multiple-deme PGA results in improved optimum design, especially when the search space is large.
► Combined use of multiple-deme PGA and the proposed crossover and mutation operators considerably reduce the computational effort of optimisation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Constructional Steel Research - Volume 67, Issue 8, August 2011, Pages 1232–1243
نویسندگان
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