دوره 13، شماره 2 - ( 1-1402 )
جلد 13 شماره 2 صفحات 176-155 |
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Shahrouzi M, Salehi A. AN ADAPTIVE-BAND STRATEGY TO ACCELERATE DISCRETE OPTIMIZATION OF SPACE TRUSS STRUCTURES. International Journal of Optimization in Civil Engineering 2023; 13 (2) :155-176
URL: http://ijoce.iust.ac.ir/article-1-547-fa.html
URL: http://ijoce.iust.ac.ir/article-1-547-fa.html
AN ADAPTIVE-BAND STRATEGY TO ACCELERATE DISCRETE OPTIMIZATION OF SPACE TRUSS STRUCTURES. عنوان نشریه. 1402; 13 (2) :155-176
چکیده: (4484 مشاهده)
In most practical cases, structural design variables are linked to a discrete list of sections for optimal design. Cardinality of such a discrete search space is governed by the number of alternatives for each member group. The present work offers an adaptive strategy to detect more efficient alternatives and set aside redundant ones during optimization. In this regard, the difference between the lower and the upper bounds on such variables is gradually reduced by a procedure that adapts history of the selected alternatives in previous iterations. The propsed strategy is implemented on a hybrid paritcle swarm optimizer and imperialist competitive algorithm. The former is a basic swarm intelligent method while the later utilizes subpopulations in its search. Spatial and large-scale structures in various shapes are treated showing successive performance improvement. Variation of a diversity index and resulting band size are traced and discussed to declare behavior merits of the proposed adaptive band strategy.
نوع مطالعه: پژوهشي |
موضوع مقاله:
Optimal design
دریافت: 1401/10/10 | پذیرش: 1402/2/1 | انتشار: 1402/2/1
دریافت: 1401/10/10 | پذیرش: 1402/2/1 | انتشار: 1402/2/1
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