Open Access

ARTICLE

Lateral Plastic Collapse of Cylinders: Experiments and Modeling

by K. Nesnas¹, A. Abdul-Latif²

1 GSM/LASMIS, Université de Technologie de Troyes, B.P. 2060, 10010, Troyes cedex, France
2 Corresponding author. ERBEM/GIM, Université Paris 8, IUT de Tremblay, 93290 Tremblay-en-France, France. Tel.: (33) 1-41-51-12-34; Fax: (33) 1-48-61-38-17; e-mail: aabdul@iut-tremblay.univ-paris8.fr

Computer Modeling in Engineering & Sciences 2001, 2(3), 373-388. https://doi.org/10.3970/cmes.2001.002.373

Abstract

Large plastic collapse of an identical pair of cylinders of various geometries having the same length and volume is studied under lateral compressive load. Superplastic material is employed as a representative material to simulate the classical engineering material behavior under high strain rate. The effects of the strain rate and the geometry of cylinders on the plastic collapse are taken into account. The experimental study is conducted using a structure in which one cylinder is superplastic and the other is steel (referred to as deformable and non-deformable situation "DND''). The actual structure (DND) and that one investigated experimentally by Abdul-Latif (2000) are modeled. This latter is referred to as "deformable situation''. A standard numerical study is conducted based on the updated Lagrangian formulation starting from the principle of virtual power. The inelastic flow is described by a simple power law of Norton-Hoff type. It is demonstrated that the predictions describe fairly well the available experimental results.

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