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Applied Mathematics and Mechanics

, Volume 20, Issue 10, pp 1108–1115 | Cite as

The influence of imperfections upon the critical load of structures

  • Zhu Zhengyou
  • Cong Yuhao
Article

Abstract

By means of the theory of universal unfolding, the influence of multiimperfections upon the critical load of structure in engineering is analysed in this paper. For the pitchfork problem, a lower bound of increments of the critical loads caused by imperfections of the structures is given. A simple and available numerical method for computing the lower bound is described.

Key words

imperfections critical load pitchfork universal unfolding 

CLC number

O343 

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Copyright information

© Editorial Committee of Applied Mathematics and Mechanics 1999

Authors and Affiliations

  • Zhu Zhengyou
    • 1
    • 2
  • Cong Yuhao
    • 3
  1. 1.Shanghai Institute of Applied Mathematics and MechanicsShanghai UniversityShanghaiP R China
  2. 2.Department of MathematicsShanghai UniversityShanghaiP R China
  3. 3.College of Mathematical SciencesShanghai Normal UniversityShanghaiP R China

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