期刊
COMPOSITES PART B-ENGINEERING
卷 56, 期 -, 页码 638-646出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2013.08.084
关键词
Polymer-matrix composites (PMCs); Transverse cracking; Damage mechanics; Finite element analysis (FEA); Parameter identification
资金
- Universidad Carlos III de Madrid
- Banco de Santander
Discrete damage mechanics (DDM) refers to micromechanics of damage constitutive models that, when incorporated into commercial finite element software via user material subroutines, are able to predict intralaminar transverse and shear damage initiation and evolution in terms of the fracture toughness of the composite. A methodology for determination of the fracture toughness is presented, based on fitting DDM model results to available experimental data. The applicability of the DDM model is studied by comparison to available experimental data for Carbon Epoxy laminates. Sensitivity of the DDM model to h- and p-refinement is studied. Also, prediction of modulus vs. applied strain is contrasted with ply discount results and the effect of in situ correction of strength is highlighted. (C) 2013 Elsevier Ltd. All rights reserved.
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