Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (9): 18-23.

• Architecture & Civil Engineering • Previous Articles     Next Articles

Method to Analyze Wrinkled Membranes by Using Local Coordinate Transpose and Equivalent Stiffness

Zhao Ran1  Wei De-min1  Sun Wen-bo2   

  1. 1. State Key Laboratory of Sublropieal Building Science, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. Architectural Design and Research Institute, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-09-27 Revised:2009-02-26 Online:2009-09-25 Published:2009-09-25
  • Contact: 赵冉（1982-），男，博士生，主要从事索膜结构、大跨度空间结构研究． E-mail:zhaoran1129@yahoo．com．cn
  • About author:赵冉（1982-），男，博士生，主要从事索膜结构、大跨度空间结构研究．
  • Supported by:

    广东省自然科学基金资助项目（020940）

PDF

827

Abstract:

In the load analysis of membrane structures,incorrect compressive stresses exist in one-way wrinkled and slack membranes,so that wrinkling analyses should be performed in the calculation process of the structures.This paper proposes a new method to analyze wrinkled membranes by using the local coordinate transpose and the equivalent stiffness,and presents the corresponding program based on the finite element software Strand7 and its application program interface Strand7API.The program is then used to analyze the whole-process response of a typical membrane structure under vertical loads. The results indicate that, after the iterative calculation, the proposed method makes the second principal stress basically be zero, correctly deals with wrinkled membranes, and helps to obtain the actual load responses of membranes after the emergence of wrinkles.

Key words: wrinkling, membrane structure, finite element method, local coordinate transpose, equivalent stiffness