توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Improved Big Bang Big Crunch to Optimize Barrel Vault Frames
نویسنده(ها): ،
اطلاعات انتشار: نهمین کنگره بین المللی مهندسی عمران، سال
تعداد صفحات: ۸
In this paper optimal design of barrel vault frames is performed via an Improved Big Bang Big Crunch optimization (IBB–BC) algorithm based on Big Bang–Big Crunch (BB–BC) and harmony search (HS methods. The BB–BC is applied for global optimization; and harmony search scheme deals with variable constraints. For optimal design constraints are considered consisting of the displacements and ultimate strength, which are chosen according to the Load and Resistance Factor Design American Institute of Steel Construction (LRFD –AISC).Results demonstrate the efficiency and robustness of IBB–BC in comparison to the HS, BB–BC and HBB–BC.<\div>

۲Big Bang–Big Crunch algorithm based optimum design of steel frames
نویسنده(ها): ،
اطلاعات انتشار: نهمین کنگره بین المللی مهندسی عمران، سال
تعداد صفحات: ۸
In this paper, the Big Bang–Big Crunch algorithm is utilized for the optimum design of steel frames following the AISC–LRFD specification. The BB–BC optimization is a population–based meta–heuristic search procedure that relies on one of the theories of the evolution of the universe namely the Big Bang and Big Crunch theory. The objective of the optimization is to minimize the total weight of the structure subjected to serviceability and strength constraints following the AISC–LRFD. Design examplesconsidered in this paper consist of a rigid steel frame and a braced steel frame. The braced steel frame is optimized using two systems, Building Frame System (BFS) and Dual Frame System (DFS). Finally it is shown that the frame designed as the DFS is lighter than that designed as the BFS. Also the results obtained by the BB–BC algorithm for the rigid steel frame demonstrate the efficiency of the algorithm.<\div>
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