Rigorous derivation of the formula for the buckling load in axially compressed circular cylindrical shells

Journal of Elasticity, Jan 2015.

Yury Grabovsky1, Davit Harutyunyan2

1. Temple University, Filadelfia, Pennsylvania, United States and

2. University of Utah, Salt Lake City, Applied Mathematics and Analysis

 

Abstract

The goal of this paper is to apply the recently developed theory of buckling of arbitrary slender bodies to a tractable yet non-trivial example of buckling in axially compressed circular cylindrical shells, regarded as three-dimensional hyperelastic bodies. The theory is based on a mathematically rigorous asymptotic analysis of the second variation of 3D, fully nonlinear elastic energy, as the shell’s slenderness parameter goes to zero. Our main results are a rigorous proof of the classical formula for buckling load and the explicit expressions for the relative amplitudes of displacement components in single Fourier harmonics buckling modes, whose wave numbers are described by Koiter’s circle. This work is also a part of an effort to quantify the sensitivity of the buckling load of axially compressed cylindrical shells to imperfections of load and shape.

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Rigorous Derivation of the Formula for the Buckling Load in Axially Compressed Circular Cylindrical Shells

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