The effect of geometric imperfections on the buckling behaviour of composite laminated cylinders under external hydrostatic pressure

被引：38

作者：

Tsouvalis, NG ^{[1
]}

Zafeiratou, AA ^{[1
]}

Papazoglou, VJ ^{[1
]}

机构：

[1] Natl Tech Univ Athens, Dept Naval Architecture & Marine Engn, Athens 15773, Greece

来源：

COMPOSITES PART B-ENGINEERING | 2003年 / 34卷 / 03期

关键词：

buckling; composites; cylindrical shells; geometric imperfections;

D O I：

10.1016/S1359-8368(02)00106-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using a new FE modelling procedure for the accurate representation of a geometrically imperfect cylinder, the present study investigates the effect of the initial imperfection magnitude on the cylinder buckling load, when it is loaded by external hydrostatic pressure. The buckling behaviour of a carbon/epoxy filament wound cylinder is initially studied and the modelling procedure is validated through a comparison between calculated and experimental results. Various FE models are developed and evaluated, with increasing degree of complexity. The method is then applied to a cylinder with different end supports, to assess how the boundary conditions together with the imperfections affect the buckling behaviour. Finally, the effect of imperfection magnitude is investigated, leading to the calculation of knockdown factors as low as 0.6. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：217 / 226

页数：10

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