کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
266949 504388 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Coupled form-finding and grid optimization approach for single layer grid shells
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Coupled form-finding and grid optimization approach for single layer grid shells
چکیده انگلیسی

This paper demonstrates a novel two-phase approach to the preliminary structural design of grid shell structures, with the objective of material minimization and improved structural performance. The two-phase approach consists of: (i) a form-finding technique that uses dynamic relaxation with kinetic damping to determine the global grid shell form, (ii) a genetic algorithm optimization procedure acting on the grid topology and nodal positions (together called the ‘grid configuration’ in this paper). The methodology is demonstrated on a case study minimizing the mass of three 24 × 24 m grid shells with different boundary conditions. Analysis of the three case studies clearly indicates the benefits of the coupled form-finding and grid configuration optimization approach: material mass reduction of up to 50% is achieved.


► A novel approach to the preliminary design of grid shell structures.
► 2-Phase approach: form finding and grid topology and nodal positions optimization.
► Demonstrate on case study minimizing the mass of 3 grid shells.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 52, July 2013, Pages 230–239
نویسندگان
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