円管の横圧縮変形に及ぼす肉厚の影響

概要

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In the present study, the effects of tube thickness and the mechanical properties of tube materials on the elastic-plastic deformation of circular tubes compressed laterally between rigid plates, were investigated. A series of lateral compression tests were carried out for a commercially pure aluminium 1197-O, and two aluminium alloys, 6063-T5 and 2014-T1, at a quasi-static rate. In most of the specimens of 2041-T1 and 6063-T5, fracture occurs during lateral compression tests. The location of relatively thinner specimens was the outer surface close to the horizontal ends and that of thicker specimens was the inner surface close to the vertical ends. In order to investigate stress and strain in the deforming tube, finite-element analyses were also performed. The load/deflection curves of tubes obtained from the FEM analysis showed good agreement with those obtained from experiments. The FEM results could explain well the change of fracture location.
社団法人日本機械学会の論文
1991-06-25