Imperfection sensitivity of slender/stocky metal plates

被引：14

作者：

Amani, Mozhdeh ^{[1
]}

Alinia, M. M. ^{[1
]}

Fadakar, M. ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Dept Civil Engn, Tehran 158754413, Iran

来源：

THIN-WALLED STRUCTURES | 2013年 / 73卷

关键词：

Buckling; Postbuckling; Plates; Initial imperfection; Slender; Stocky; POSTBUCKLING BEHAVIOR; SHEAR;

D O I：

10.1016/j.tws.2013.08.010

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Buckling and postbuckling behavior of metal plates is governed by their slenderness parameter. Using nonlinear finite element simulations, unstiffened mild carbon steel, stainless steel and aluminum plates under the action of axial compression are first classified into slender, moderate and stocky plates. Then the effects of initial imperfection amplitude on each plate type and material is studied via sensitivity analyses. The results show that the transition from slender to stocky plates, regardless of material type, occurs at the slenderness parameter of 2. Empirical equations for evaluating the buckling and postbuckling capacities of imperfect plates are drawn out. It is observed that the increase of imperfection amplitude decreases the buckling load of slender plates, but their postbuckling reserves and ultimate capacities are unaffected. In contrast, the ultimate strength of stocky plates is highly affected by initial imperfections. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：207 / 215

页数：9

共 24 条

[1] Inelastic buckling behavior of stocky plates under interactive shear and in-plane bending [J].