Predicting fracture of layered composites caused by internal instability

Costas Soutis; Igor A. Guz

doi:10.1016/S1359-835X(01)00077-X

Predicting fracture of layered composites caused by internal instability

Costas Soutis, Igor A. Guz^*

^*Corresponding author for this work

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

The present paper estimates the critical strain at which ply instability occurs in compressible layered composites under uniaxial or biaxial compression. This is achieved by using two methods: the continuum approach and the model of piecewise-homogeneous medium in conjunction with the three-dimensional stability theory. The accuracy of the continuum theory is examined by taking into account the influence of layer thickness, stiffness properties and biaxiality of loads. Also, upper and lower bounds for the critical buckling strain of laminates with interfacial defects (cracks with connected edges) are determined using the results for perfectly bonded and sliding layers.

Original language	English
Pages (from-to)	1243-1253
Number of pages	11
Journal	Composites Part A: Applied Science and Manufacturing
Volume	32
Issue number	9
DOIs	https://doi.org/10.1016/S1359-835X(01)00077-X
Publication status	Published - Sept 2001

Keywords

A. layered structures
B. buckling
B. fracture
C. analytical modelling
C. micro-mechanics

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials

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10.1016/S1359-835X(01)00077-X

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AU - Guz, Igor A.

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AB - The present paper estimates the critical strain at which ply instability occurs in compressible layered composites under uniaxial or biaxial compression. This is achieved by using two methods: the continuum approach and the model of piecewise-homogeneous medium in conjunction with the three-dimensional stability theory. The accuracy of the continuum theory is examined by taking into account the influence of layer thickness, stiffness properties and biaxiality of loads. Also, upper and lower bounds for the critical buckling strain of laminates with interfacial defects (cracks with connected edges) are determined using the results for perfectly bonded and sliding layers.

KW - A. layered structures

KW - B. buckling

KW - B. fracture

KW - C. analytical modelling

KW - C. micro-mechanics

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VL - 32

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JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

IS - 9

ER -

Predicting fracture of layered composites caused by internal instability

Abstract

Keywords

ASJC Scopus subject areas

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