Vol. 3, No. 5, 2008

Download this article
Download this article For screen
For printing
Recent Issues

Volume 12
Issue 3, 249–351
Issue 2, 147–247
Issue 1, 1–146

Volume 11, 5 issues

Volume 10, 5 issues

Volume 9, 5 issues

Volume 8, 8 issues

Volume 7, 10 issues

Volume 6, 9 issues

Volume 5, 6 issues

Volume 4, 10 issues

Volume 3, 10 issues

Volume 2, 10 issues

Volume 1, 8 issues

The Journal
Cover
Editorial Board
Research Statement
Scientific Advantage
Submission Guidelines
Submission Form
Subscriptions
Author Index
To Appear
 
ISSN: 1559-3959
Postbuckling of truss-lattice shear panels using exact theory

Philip A. Williams, Richard Butler, Hyunsun A. Kim and Giles W. Hunt

Vol. 3 (2008), No. 5, 995–1009
Abstract

A new solution is developed to model the stable postbuckling behaviour of a truss-lattice shear panel. The mode shapes are derived through load equilibrium conditions and are based on the load in the structural members. The load in each member of a single-cell panel can be calculated exactly, without the need for an iterative postbuckling path, and the method produces excellent results in initial and advanced postbuckling. Comparisons are drawn with an alternative analytical method and the commonplace finite element approach. A Rayleigh–Ritz method based on a Fourier approximation to the mode shape provides the useful progression from an unbuckled to a buckled structure giving excellent results in initial postbuckling, although is limited for advanced postbuckling. The standard finite element method for this problem produces accurate results but with limited detail around the buckling load owing to the presence of an imperfection in the shape of the initial mode, which is required to initiate the postbuckling analysis.

Keywords
postbuckling, truss lattice, shear panels, nonlinear analysis
Milestones
Received: 20 November 2007
Revised: 29 February 2008
Accepted: 5 March 2008
Published: 1 July 2008
Authors
Philip A. Williams
Department of Mechanical Engineering
University of Bath
Bath, BA2 7AY
United Kingdom
Richard Butler
Department of Mechanical Engineering
University of Bath
Bath, BA2 7AY
United Kingdom
Hyunsun A. Kim
Department of Mechanical Engineering
University of Bath
Bath, BA2 7AY
United Kingdom
Giles W. Hunt
Department of Mechanical Engineering
University of Bath
Bath, BA2 7AY
United Kingdom