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Vol. 52 (2011) No. 2 June n. 168


Conversion of Imperfection-Sensitive Elastic Structures into Imperfection-Insensitive Ones by Adding Tensile Members

< Table of Contents for Vol. 52 (2011) No. 2 June n. 168
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 52 (2011) No. 2 June n. 168
  • Pages: 121-128
  • Title: Conversion of Imperfection-Sensitive Elastic Structures into Imperfection-Insensitive Ones by Adding Tensile Members
  • Author(s): X. Jia and H.A. Mang
  • Keywords: bifurcation buckling, consistently linearized eigenproblem, imperfection (in)sensitivity, Koiter’s initial postbuckling analysis, von Mises truss, arch bridge
Abstract
The benefit of an increase of the stability limit of a structure in consequence of a modification of the original design may largely be lost through deterioration of the postbuckling behavior. Therefore, it may be useful to concentrate on design changes that result in a significant improvement of the postbuckling behavior without decrease of the stability limit. It is shown that the possibility of converting imperfection-sensitive structures into imperfection-insensitive ones by adding tensile members is not restricted to academic examples such as the von Mises truss. An arch bridge serves as the demonstration object. The reason for disregarding the option of adding compressive members to the original structure is to exclude the possibility of buckling of these members.

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