Effective stiffness concept in bending modeling of laminates with damage in surface 90-layers

被引：21

作者：

Pupurs, A. ^{[1
,2
]}

Varna, J. ^{[1
]}

Loukil, M. ^{[2
]}

Ben Kahla, H. ^{[1
]}

Mattsson, D. ^{[2
]}

机构：

[1] Lulea Univ Technol, Composites Ctr Sweden, S-95187 Lulea, Sweden

[2] Swerea SICOMP, Pitea, Sweden

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2016年 / 82卷

关键词：

Transverse cracking; Analytical modeling; Finite element analysis (FEA); TRANSVERSE CRACKS; MATRIX CRACKING; PLY CRACKS; THERMOELASTIC PROPERTIES; DENSITY; STRESS;

D O I：

10.1016/j.compositesa.2015.11.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Simple approach based on Classical Laminate Theory (CLT) and effective stiffness of damaged layer is suggested for bending stiffness determination of laminate with intralaminar cracks in surface 90-layers and delaminations initiated from intralaminar cracks. The effective stiffness of a layer with damage is back calculated comparing the in-plane stiffness of a symmetric reference cross-ply laminate with and without damage. The in-plane stiffness of the damaged reference cross-ply laminate was calculated in two ways: (1) using FEM model of representative volume element (RVE) and (2) using the analytical GLOB-LOC model. The obtained effective stiffness of a layer at varying crack density and delamination length was used to calculate the A, B and D matrices in the unsymmetrically damaged laminate. The applicability of the effective stiffness in CLT to solve bending problems was validated analyzing bending of the damaged laminate in 4-point bending test which was also simulated with 3-D FEM. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：244 / 252

页数：9

共 20 条

[1] Potential of a simple variational analysis in predicting shear modulus of laminates with cracks in 90-layers
Giannadakis, Konstantinos
Varna, Janis
JOURNAL OF COMPOSITE MATERIALS, 2014, 48 (15) : 1843 - 1856
[2] ANALYSIS OF BENDING STIFFNESS REDUCTION IN LAMINATES DUE TO TRANSVERSE CRACKS AND DELAMINATIONS IN SURFACE LAYERS
Pupurs, Andrejs
Loukil, Mohamed
Ahlqvist, Fredrik
Mattsson, David
20TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS, 2015,
[3] Analytical modeling of stiffness reduction in symmetric and balanced laminates due to cracks in 90° layers
Joffe, R
Varna, J
COMPOSITES SCIENCE AND TECHNOLOGY, 1999, 59 (11) : 1641 - 1652
[4] Damage resistance and damage tolerance of dispersed CFRP laminates: The bending stiffness effect
Sebaey, T. A.
Gonzalez, E. V.
Lopes, C. S.
Blanco, N.
Costa, J.
COMPOSITE STRUCTURES, 2013, 106 : 30 - 32
[5] Effect of the Thickness and Position of Soft Layers in Composite Laminates on the Bending Stiffness
Lepoittevin, Gregoire
Kress, Gerald
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES, 2013, 20 (06) : 497 - 503
[6] BENDING FATIGUE STRENGTH OF GFRP LAMINATES WITH SURFACE DAMAGE BY INDENTATION.
Yoshino, Toshio
Yasuda, Takeshi
Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, 1986, 52 (476): : 972 - 980
[7] THE BENDING FATIGUE-STRENGTH OF GFRP LAMINATES WITH SURFACE DAMAGE BY INDENTATION
YOSHINO, T
YASUDA, T
BULLETIN OF THE JSME-JAPAN SOCIETY OF MECHANICAL ENGINEERS, 1986, 29 (258): : 4452 - 4452
[8] MODELING STIFFNESS LOSS IN QUASI-ISOTROPIC LAMINATES DUE TO MICROSTRUCTURAL DAMAGE
HARRIS, CE
ALLEN, DH
NOTTORF, EW
GROVES, SE
JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 1988, 110 (02): : 128 - 133
[9] Prediction of effective stiffness in [θm/90n]s laminates due to transverse cracking
Zhang, Hui
Minnetyan, Levon
JOURNAL OF COMPOSITE MATERIALS, 2007, 41 (01) : 89 - 109
[10] Granular layers on vibrating plates: Effective bending stiffness and particle-size effects
Kang, Wonmo
Turner, Joseph A.
Bobaru, Florin
Yang, Liyong
Rattanadit, Kitti
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2007, 121 (02): : 888 - 896

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