کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
266949 | 504388 | 2013 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Coupled form-finding and grid optimization approach for single layer grid shells Coupled form-finding and grid optimization approach for single layer grid shells](/preview/png/266949.png)
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.
Journal: Engineering Structures - Volume 52, July 2013, Pages 230–239