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Modeling progressive delamination of laminated composites by discrete element method

Yang, DM, Ye, JQ, Tan, YQ and Sheng, Y (2011) Modeling progressive delamination of laminated composites by discrete element method. Computational Materials Science, 50 (3). 858 - 864 . ISSN 0927-0256


Discrete element method (DEM) was used to model progressive delamination of fiber reinforced composite laminates. The anisotropic composite plies were constructed through a hexagonal packing of particle elements. Contacts between the particles were represented by parallel bonds with the verified normal and shear elastic properties. The ply interface was characterized by a contact softening model with a bilinear elastic behavior which is similar to the cohesive zone model in the continuum mechanics. DCB. ELS and FRMM tests were simulated by the DEM model to assess its capability of modeling mode I, mode II and mix mode fracture of delamination, respectively. Good agreements were observed between the DEM and existing numerical and experimental results of loading curves, which confirmed that the DEM model can be used to simulate initiation and propagation of composite delamination, with more insights into microscopic material behavior, such as damage extension and plastic zone.

Item Type: Article
Keywords: Discrete element method (DEM), Fiber reinforced composite laminae, Delamination, Anisotropic behavior, Cohesive-Zone Model, Continuum Damage Model, Computational Issues, Interface Elements, Transverse Loads, Simulation, Fracture, Propagation, Formulation, Growth
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
Depositing User: Symplectic Publications
Date Deposited: 18 May 2011 10:20
Last Modified: 23 Jun 2014 16:25
Published Version: http://dx.doi.org/10.1016/j.commatsci.2010.10.022
Publisher: Elsevier B.V.
Identification Number: 10.1016/j.commatsci.2010.10.022
URI: http://eprints.whiterose.ac.uk/id/eprint/42984

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