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Discrete element modeling of the microbond test of fiber reinforced composite

Yang, Dongmin and Sheng, Yong and Ye, Jianqiao and Tan, Yuanqiang (2010) Discrete element modeling of the microbond test of fiber reinforced composite. Computational materials science, 49 (2). pp. 253-259. ISSN 0927-0256

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Abstract

Discrete element method (DEM) was used to simulate the dynamic process of microbond test of fiber reinforced composites, in which the fiber and matrix were modeled as elastic and elastic-plastic materials, respectively. The interface between fiber and matrix was represented by a bilinear contact softening model. Plastic deformation and progressive cracking of the matrix were observed in the simulation with comparable similarity to the existing experimental results. The initiation and propagation of interfacial debonding were also captured by the DEM simulations, whereas it is very difficult to achieve this by other numerical methods. Vertical and inclined vises with two different vise angles were tested in the simulations. It was found that both vise geometry and vise angle had significant effect on the damages of the material, and the inclined vise was sensitive to the vise angle in terms of large variation of cutting force. The developed DEM model can also be applied to predict material damages in other more complicated fiber reinforce composite system. (C) 2010 Elsevier B.V. All rights reserved.

Item Type: Article
Journal or Publication Title: Computational materials science
Uncontrolled Keywords: DEM ; Microbond test ; Fiber reinforced composite ; Interface debonding ; Matrix cracking
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 54214
Deposited By: ep_importer_pure
Deposited On: 18 May 2012 16:59
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:25
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/54214

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