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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Metal Spatial Structures

Effect of Accordion Force Limiting Device on stability behavior of double layer grids

< Table of Contents for Metal Spatial Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Metal Spatial Structures
  • Pages: 10
  • Title: Effect of Accordion Force Limiting Device on stability behavior of double layer grids
  • Author(s): Maryam Poursharifi, Mohammad Reza Chenaghlou, Karim Abedi
  • Keywords: accordion force limiting device, double layer grid, stability analysis, space structures
Abstract
Space structures have many advantages such as light weight, mass production, ease of erection as well as economic matters. Beside these advantages, space structures suffer from sudden collapse in brittle manner because of compression member's failure. In order to modify the behaviour of space trusses, force limiting devices can be applied to critical compression members. In this study, an innovative type of force limiting device is introduced which is designed based on buckling restrained braces and accordion metallic damper. This device called Accordion Force Limiting Device (AFLD). One whole steel Accordion Force Limiting Device is designed, constructed and tested. A parametric study is carried out to study the effect of AFLD, considering loading patterns, aspect ratio as well as length to depth ratio in double layer grids. Results indicate that regardless of loading patterns as well as varying geometric properties applying AFLD to critical compression members cause great behavior improvement.

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