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


IASS Symposium 2016

SESSION: Tension & Membrane Structures

Deflation behavior of an air-supported membrane structure with a dome shape under vertical loading

< Table of Contents for Tension & Membrane Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Tension & Membrane Structures
  • Pages: 9
  • Title: Deflation behavior of an air-supported membrane structure with a dome shape under vertical loading
  • Author(s): Qiang Qing, Xiao Guo, Qingsong Li, Jinghai Gong, Zhongli Li
  • Keywords: air-supported membrane structure, loading deflation, residual pressure, membrane wrinkling, experiment, simulation
Abstract
This paper presents experimental investigation and numerical simulation of the deflation behavior of an air-supported structure of dome shape under vertical loading. There loading cases, including 0kN, 160kg, and 320kg of sandbags, were applied on the hemispherical area respectively. From tests, the structure needed larger residual pressures during deflation tests to balance with larger external load, which were around 32Pa, 68Pa, and 120Pa respectively. In addition, in tests, it was observed that the wrinkles would occur and develop in forms of horizontal wrinkles and local wrinkles resulted by sandbag loading. A model based on the vector form intrinsic finite element (VFIFE) method has been developed for corresponding loading deflation simulations. Simulated results agree with experimental tests with minor differences in predicting residual pressure. As a result of research, general guidelines are proposed in improving anti-deflation performance in engineering applications.

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