POSTBUCKLING BEHAVIOR OF SELECTED CURVED STIFFENED GRAPHITE-EPOXY PANELS LOADED IN AXIAL-COMPRESSION

被引：29

作者：

KNIGHT, NF

STARNES, JH

机构：

[1] NASA, Hampton, VA, USA, NASA, Hampton, VA, USA

来源：

AIAA JOURNAL | 1988年 / 26卷 / 03期

关键词：

PLATES; -; Buckling;

D O I：

10.2514/3.9895

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Results of an experimental and analytical study of the postbuckling behavior of selected curved stiffened graphite-epoxy panels loaded in axial compression are presented. The postbuckling response and failure characteristics of the panels are described. Each panel had four equally spaced I-shaped stiffeners and 16 ply quasi-isotropic skins. Panels with three different stiffener spaceings were tested. Failure of all panels initiated in a skinstiffener inrerface region. Analtyical results froma nonlinear general shell finite-element analysis computer code correlate well with typical postbuckling test results up to failure. The analytical modeling detail necessary to predict accurately the response of the panel is described. Measured initial geometric imperfections were included in the postbuckling analysis. Typical stress distributions in the skinstiffener interface region were determined analytically.

引用

页码：344 / 352

页数：9

共 19 条

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ALMROTH BO, 1982, LMSCD633873 LOCKH PA

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