Bistable prestressed buckled laminates

被引：123

作者：

Daynes, S. ^{[1
]}

Potter, K. D. ^{[1
]}

Weaver, P. M. ^{[1
]}

机构：

[1] Univ Bristol, Dept Aerosp Engn, Bristol BS8 1TR, Avon, England

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2008年 / 68卷 / 15-16期

关键词：

Polymer-matrix composites (PMCs); Non-linear behaviour; Residual stress;

D O I：

10.1016/j.compscitech.2008.09.036

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The bistability of cross-ply [0(n)/90n](T) laminates has already been investigated, both experimentally and analytically, in much detail. Bistability occurs due to geometric non-linearity and the mismatch between the thermal expansion coefficients of the constituent fibre and matrix materials. In this current work a new type of bistable laminate is presented which has a symmetric lay-up. Its bistability derives from careful manipulation of the residual stresses across the width of the laminate. This is done by applying a prestress to selected fibres in [0/90/90/0](T) FRP prepreg laminates prior to curing. Once cured and cooled down this prestress is released and the resulting laminate then buckles. This buckling creates two bistable bowing geometries with two edges remaining relatively flat. Analytical and finite element modelling is also carried out to better understand this buckling mechanism. Potential applications of these new bistable composites include morphing aircraft skins. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3431 / 3437

页数：7

共 16 条

[1]

*ABAQUS CAE, 2006, ABAQUS CAE VERS 6 6

[2]

BILANIN AJ, 2002, Patent No. 6345792

[3] Thermally-induced deformation behavior of unsymmetric laminates [J].

Dano, ML ;

Hyer, MW .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1998, 35 (17) :2101-2120

[4]

DAYNES S, J COMPOS MAT UNPUB

[5]

HADI AS, 1997, J COMPOS STRUCT, V40, P305

[6] THE ROOM-TEMPERATURE SHAPES OF 4-LAYER UNSYMMETRIC CROSS-PLY LAMINATES [J].

HYER, MW .

JOURNAL OF COMPOSITE MATERIALS, 1982, 16 (JUL) :318-340

[7] SOME OBSERVATIONS ON THE CURED SHAPE OF THIN UNSYMMETRIC LAMINATES [J].

HYER, MW .

JOURNAL OF COMPOSITE MATERIALS, 1981, 15 (MAR) :175-194

[8]

KRISHNAMURTHY S, 2006, THESIS CRANFIELD U

[9] Impact strength of fiber pre-stressed composites [J].

Motahhari, S ;

Cameron, J .

JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, 1998, 17 (02) :123-130

[10] The generation of geometrical deformations due to tool/part interaction in the manufacture of composite components [J].

Potter, KD ;

Campbell, M ;

Langer, C ;

Wisnom, MR .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2005, 36 (02) :301-308

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