Journal
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
Volume 55, Issue 5, Pages 1086-1102Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jmps.2006.10.003
Keywords
elastic instability; post-buckling behaviour; auxetic materials
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The behaviour of tubes under conditions of pure bending is investigated for the cases where the material of which they are constructed is either orthotropic or of various Poisson's ratios. Large deflections and moderate nonlinear strains are considered and the modelling incorporates Timoshenko beam theory thereby allowing non-zero shear strains to develop. This in turn makes axially inhomogeneous deformation of the cross-section possible and, in particular, the compressed side can develop wrinkling. Numerical solutions are presented for various material types and tube dimensions and some interesting phenomena, such as mode interaction and jumping, are demonstrated. (C) 2006 Elsevier Ltd. All rights reserved.
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