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Application of decohesive model with mixed damage scale in fracture analysis of composite materials

Application of decohesive model with mixed damage scale in fracture analysis of composite materials
Application of decohesive model with mixed damage scale in fracture analysis of composite materials
A decohesive model using a mixed damage scale and using the total fracture energy to simulate the fracture process of composite materials has been developed in this article. The model assumes a bilinear interfacial decohesion function and is incorporated into an interface finite element developed as a user subroutine in the commercial FEA package ABAQUS. In comparison with traditional numerical methods in fracture mechanics, this approach can automatically predict the failure load, crack path and the residual stiffness of bodies undergoing the fracture process. Applications given in this paper are simulation of a typical fracture test with a double cantilever beam (DCB) specimen; modelling a stiffened composite laminated panel under four-point bending and modelling a repaired composite sandwich panel under four-point bending. Good correlation was seen between modelling predictions and experimental results.
composite materials and repairs, crack and delamination growth, interface element, interfacial decohesion model, mixed damage scale
8756-758X
761-769
Chen, J.
116323ca-c4fd-4be2-96cb-a54d6cec5cc4
New, A.
d2fbaf80-3abd-4bc5-ae36-9c77dfdde0d6
Chen, J.
116323ca-c4fd-4be2-96cb-a54d6cec5cc4
New, A.
d2fbaf80-3abd-4bc5-ae36-9c77dfdde0d6

Chen, J. and New, A. (2001) Application of decohesive model with mixed damage scale in fracture analysis of composite materials. Fatigue & Fracture of Engineering Materials & Structures, 24 (11), 761-769. (doi:10.1046/j.1460-2695.2001.00441.x).

Record type: Article

Abstract

A decohesive model using a mixed damage scale and using the total fracture energy to simulate the fracture process of composite materials has been developed in this article. The model assumes a bilinear interfacial decohesion function and is incorporated into an interface finite element developed as a user subroutine in the commercial FEA package ABAQUS. In comparison with traditional numerical methods in fracture mechanics, this approach can automatically predict the failure load, crack path and the residual stiffness of bodies undergoing the fracture process. Applications given in this paper are simulation of a typical fracture test with a double cantilever beam (DCB) specimen; modelling a stiffened composite laminated panel under four-point bending and modelling a repaired composite sandwich panel under four-point bending. Good correlation was seen between modelling predictions and experimental results.

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Published date: 2001
Keywords: composite materials and repairs, crack and delamination growth, interface element, interfacial decohesion model, mixed damage scale

Identifiers

Local EPrints ID: 21989
URI: http://eprints.soton.ac.uk/id/eprint/21989
ISSN: 8756-758X
PURE UUID: 24dd1729-b674-465e-9151-5e47859a4596

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Date deposited: 16 Mar 2006
Last modified: 08 Jan 2022 06:46

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Contributors

Author: J. Chen
Author: A. New

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