Buckling of a thin-walled cylindrical shell with foam core under axial compression

被引：21

作者：

Ye, L. ^{[1
]}

Lu, G. ^{[1
]}

Ong, L. S. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

THIN-WALLED STRUCTURES | 2011年 / 49卷 / 01期

关键词：

Thin-walled tube; Cylindrical shell; Compliant core; Elastic buckling; Non-linear buckling; ELASTIC CORE; STABILITY;

D O I：

10.1016/j.tws.2010.08.011

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper investigates the effect of partially filled foam core on the behavior of buckling in a thin-walled cylindrical shell. Previous studies have focused on 100% infill or simply used a fixed thickness of foam core. However, this may not be the optimum arrangement in terms of design. To further investigate this, a theoretical analysis is carried out using the Rayleigh-Ritz approximation, and a new formula is proposed to predict the critical buckling stress of an infill ranging from 0% up to 100% rigid. The proposed formula agrees well with works reported in the literature. It also shows that filling a foam core in a thin-walled cylindrical shell can enhance its resistance to buckling failure. Meanwhile, a simplified formula is provided to the practicing engineer. The paper concludes that an excessive increase in foam core thickness beyond 10% of outer radius is inefficient due to extra cost and weight. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：106 / 111

页数：6