Structurally graded core junctions in sandwich beams: quasi static loading conditions

被引：18

作者：

Bozhevolnaya, E ^{[1
]}

Thomsen, OT ^{[1
]}

机构：

[1] Aalborg Univ, Inst Engn Mech, DK-9220 Aalborg, Denmark

来源：

COMPOSITE STRUCTURES | 2005年 / 70卷 / 01期

关键词：

sandwich; junction; design; critical load;

D O I：

10.1016/j.compstruct.2004.08.030

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The paper addresses the problem of sandwich beams/panels with junctions between different core materials. The physics of the impairing local effects induced by a mismatch of the elastic material properties at core junctions is discussed, and the results of an experimental investigation concerning the quasi-static failure behavior of sandwich beams with conventional butt and "structurally graded" core junctions is discussed. The term "structurally graded" core junctions include scarf junctions and junctions provided with local reinforcing patches of the faces. The influence of the junction interface geometry on the quasi-static deformation, failure initiation and crack patterns are studied experimentally for sandwich beams loaded in the three-point bending. It is shown that "structurally graded" core junctions perform better than conventional butt junctions, and thus improve the strength of the structure. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1 / 11

页数：11

共 31 条

[1]

Adams RD., 1984, STRUCTURAL ADHESIVE

[2] A 3-D elasticity solution for a sandwich composite with functionally graded core subjected to transverse loading by a rigid sphere [J].

Anderson, TA .

COMPOSITE STRUCTURES, 2003, 60 (03) :265-274

[3]

APETRE NA, 2003, P 6 INT C SANDW STRU, P227

[4]

*ASTM INT, C39300 ASTM

[5] Local effects in the vicinity of inserts in sandwich panels [J].

Bozhevolnaya, E ;

Lyckegaard, A ;

Thomsen, OT ;

Skvortsov, V .

COMPOSITES PART B-ENGINEERING, 2004, 35 (6-8) :619-627

[6] Local effects across core junctions in sandwich panels [J].

Bozhevolnaya, E ;

Thomsen, OT ;

Kildegaard, A ;

Skvortsov, V .

COMPOSITES PART B-ENGINEERING, 2003, 34 (06) :509-517

[7]

Clarke J.L., 1996, STRUCTURAL DESIGN PO

[8] Flexural behavior of sandwich beams fabricated by vacuum-assisted resin transfer molding [J].

Dai, J ;

Hahn, HT .

COMPOSITE STRUCTURES, 2003, 61 (03) :247-253

[9]

Ehbing H., 1999, Materials Science Forum, V308-311, P107, DOI 10.4028/www.scientific.net/MSF.308-311.107

[10]

Gay Daniel., 2003, COMPOSITE MAT DESIGN

← 1 2 3 4 →