Elastic buckling response of rectangular GLARE fiber-metal laminates subjected to shearing stresses

被引：13
|
作者：
Bikakis, George S. E. [1 ]
Kalfountzos, Costas D. [1 ]
Theotokoglou, Efstathios E. [1 ]
机构：
[1] Natl Tech Univ Athens, Dept Mech, Lab Strength Mat, 9 Iroon Polytech, GR-15773 Athens, Greece
来源：
AEROSPACE SCIENCE AND TECHNOLOGY | 2019年 / 87卷
关键词：
GLARE fiber-metal laminate; Elastic buckling; Uniform shear loading; Buckling coefficient; Fiber-volume fraction; Finite element analysis; VELOCITY IMPACT RESPONSE; BALLISTIC IMPACT; POSTBUCKLING BEHAVIOR; PLATES; STRENGTH; RESISTANCE; THICKNESS; FAILURE; SPLICES; PANELS;
D O I：
10.1016/j.ast.2019.02.020
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
In this article, the elastic buckling response of rectangular GLARE fiber-metal laminates with three different support types subjected to shearing stresses is investigated using the finite element method and eigenvalue buckling analysis. Using validated FEM models, the buckling coefficient-aspect ratio diagrams of eight GLARE grades are obtained and studied along with the diagrams of three UD glass-epoxy composites and monolithic 2024-T3 aluminum. It is found that the critical average buckling stress and the buckling load of the materials increases for increasing metal volume fraction. The effect of the fiber-volume fraction on the shear buckling strength of simply supported and clamped fiber-metal laminates is also studied. It is found that the variation of the fiber-volume fraction has a small influence on the behavior of the buckling coefficient-aspect ratio diagrams of two specific GLARE grades. Furthermore, an approximate method is proposed in order to estimate the new shear buckling strength of a GLARE plate when the fiber-volume fraction changes. (C) 2019 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：110 / 118
页数：9
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