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Fuzzy Comprehensive Evaluation on the Failure Mode Having Initial Imperfection Shell

  • Chengye Zheng
  • Zhixiang Yin
Conference paper
Part of the Advances in Intelligent and Soft Computing book series (AINSC, volume 78)

Abstract

The two failure modes of shell structure, dynamic instability and intensive destruction, have no distinct boundary on their structural performance; they are fuzzy and are difficult to determine problems. By using the comprehensive evaluation method in fuzzy mathematics and taking the initial imperfection of the structure into consideration, this paper, taking Kiewitt spherical shell as an example, made parameter impact analysis to the structure, and investigated the influence of span ratios, the initial geometric imperfections and bar cross-section of the structure under earthquake failure mode. Ensuring the relations between a variety of response factors of the structure and fuzzy failure modes, the paper established a power failure mode shell structure of fuzzy comprehensive evaluation model and evaluation method, and described the application of the method in the discrimination of failure mode on Kiewitt monolayer Shell with initial defect; the consequences showed that this method can solve the problem of failure mode identification better with more realistic facts and possesses higher accuracy.

Keywords

Shell structure initial imperfection dynamic instability strength failure fuzzy comprehensive evaluation 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Chengye Zheng
    • 1
  • Zhixiang Yin
    • 1
  1. 1.Institute of GraduateLiaoning Technical UniversityFuxinChina

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