کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4928743 1432082 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Shape optimisation of manufacturable and usable cold-formed steel singly-symmetric and open columns
ترجمه فارسی عنوان
بهینه سازی شکل فولاد های تولید شده و قابل استفاده فولاد به طور جداگانه، ستون متقارن و باز
کلمات کلیدی
بهینه سازی شکل، سازه های فولادی سرد تشکیل شده، مقاطع صنعتی محدودیت های مجمع، الگوریتم ژنتیک،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This paper aims at incorporating manufacturing and assembly features into a shape optimisation algorithm for cold-formed steel (CFS) profiles. Genetic algorithm (GA) is used as the search algorithm and is combined with the augmented Lagrangian constraint-handling method to avoid ill-conditioning. Manufacturable cross-sections are arbitrarily drawn in the initial generation and subsequently treated as an integral part of the GA. The assembly features considered in the study reflect the ones commonly encountered in the construction industry. They include fastening elements (horizontal flange and vertical web) and allowances for utilities, and are treated as constraints. The algorithm is applied to simply-supported singly-symmetric, free-to-warp open section columns with various numbers of manufacturing bends. Three assembly cases for half sections are investigated: (a) a horizontal flange, (b) a horizontal flange and a vertical web, and (c) a horizontal flange and a vertical web with a utility clearance. A two-step optimisation process is used to optimise the columns: (i) the optimum positions of the fastening elements (horizontal flange and vertical web) are determined first and (ii) the cross-sectional shapes are then optimised. The optimised columns are discussed and compared to the unconstrained optimised columns and the conventional lipped Cee-sections. The results demonstrate the robustness and efficiency of the algorithm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin-Walled Structures - Volume 109, December 2016, Pages 271-284
نویسندگان
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