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Modeling progressive delamination of laminated composites by discrete element method

Yang, Dongmin and Ye, Jianqiao and Tan, Yuanqiang and Sheng, Yong (2011) Modeling progressive delamination of laminated composites by discrete element method. Computational materials science, 50 (3). pp. 858-864. ISSN 0927-0256

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Abstract

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
Journal or Publication Title: Computational materials science
Uncontrolled Keywords: Discrete element method (DEM) ; Fiber reinforced composite laminae ; Delamination ; Anisotropic behavior
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 54211
Deposited By: ep_importer_pure
Deposited On: 18 May 2012 16:28
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:25
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/54211

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