Postbuckling behavior of a pressurized stiffened composite panel - Part II: Numerical analysis. Effect of the geometrical imperfections

被引：17

作者：

Blazquez, A. ^{[1
]}

Reinoso, J. ^{[1
]}

Paris, F. ^{[1
]}

Canas, J. ^{[1
]}

机构：

[1] Univ Seville, Sch Engn, Grp Elast & Strength Mat, Seville, Spain

来源：

COMPOSITE STRUCTURES | 2012年 / 94卷 / 05期

关键词：

Composite; Stiffened panels; Postbuckling; Pressure load; Initial geometric imperfections; AXIAL-COMPRESSION; FAILURE; SHEAR; SHELLS;

D O I：

10.1016/j.compstruct.2011.12.013

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Numerical simulations of the experimental tests performed with a pressurized composite stiffened panel are presented in this paper. As a consequence of the high slenderness of this structural typology, pressure caused the panel to enter the postbuckling regime. Previous experimental tests showed that the panel had a large safe postbuckling range, the experimental collapse pressure being over four times the first buckling load. Due to the relevant influence of the geometric imperfections on the global response, a procedure for taking into account actual imperfections in the development of the models is proposed. This procedure can be used as a tool to facilitate the modeling of the actual geometry of the panel, mainly the zone of the skin located between the stringers. A satisfactory agreement with experimental results has been reached using the proposed procedure. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1544 / 1554

页数：11

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