Modelling ENF test procedure by means of the two-step extension method. Influence of friction forces

被引:3
|
作者
Bonhomme, J. [1 ]
Mollon, V. [2 ]
Vina, J. [2 ]
Argueelles, A. [1 ]
机构
[1] Univ Oviedo, Dept Construct & Mfg Engn, Gijon 33203, Spain
[2] Univ Oviedo, Dept Mat Sci & Met Engn, Gijon 33203, Spain
关键词
Polymer-matrix composites; Delamination; Fracture; Finite element analysis (FEA); VCCT; Two-step extension method; INTERLAMINAR FRACTURE-TOUGHNESS; COMPOSITE; PROPAGATION; EPOXY;
D O I
10.1016/j.polymertesting.2011.08.001
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
This paper deals with the numerical determination of mode II energy release rate in AS4/8552 unidirectional carbon fibre/epoxy laminates. The Two-Step Extension Method is reviewed as an alternative procedure to perform Finite Element Analysis (FEA) on mode II delamination tests. The influence of some variables such as element length, type of element and 2D versus 3D models on the results was studied. Results were compared with empirical data obtained from End Notched Flexure (ENF) tests carried out on unidirectional carbon/epoxy laminates. In order to detect outliers, two statistical methods were used to validate the experimental results. Finally, the influence of the friction forces on the numerical results has been addressed. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:856 / 860
页数:5
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