4.5 Article

Axially compressed thin cylindrical shells: Asymptotic limits for a nonlinear basic state

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PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijnonlinmec.2021.103848

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Cylindrical shells; Boundary layers; Nonlinear bending; Perturbation methods; Elastic stability

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In this paper, we revisit the bifurcation problem of an axially compressed thin elastic circular cylinder, taking into account the nonlinear pre-buckling bending deformations. By using suitable scaling arguments and singular perturbation methods, we explore the connection with the more widely studied classical cases and confirm our novel theoretical results through direct numerical simulations.
The work presented here revisits the classical bifurcation problem for an axially compressed thin elastic circular cylinder when the nonlinear pre-buckling bending deformations are taken into account. Suitable scaling arguments and singular perturbation methods enable us to explore the link with the more widely studied classical cases in which the uniform membrane solution was used for describing the basic state. Our novel theoretical results are confirmed by direct numerical simulations of the full boundary-value problems corresponding to the relevant buckling scenarios.

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