Numerical and experimental validation of computational models for mode I composite fracture failure

被引：20

作者：

Bonhomme, J. ^{[2
]}

Argueelles, A. ^{[2
]}

Vina, J. ^{[1
]}

Vina, I. ^{[2
]}

机构：

[1] Univ Oviedo, Dept Met Engn & Mat Sci, Gijon 33203, Asturias, Spain

[2] Univ Oviedo, Dept Construct & Mfg Engn, Gijon 33203, Asturias, Spain

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2009年 / 45卷 / 04期

关键词：

Mode I fracture; Composite delamination; Virtual crack closure technique; Two-step method;

D O I：

10.1016/j.commatsci.2009.01.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work compares the numerical determination of the strain energy release rate in mode I for the interlaminar fracture of composite laminates by means of two different models: the virtual crack closure technique (VCCT) and the two-step extension method. Results were compared with empirical data obtained from double cantilever beam (DCB) tests carried out on unidirectional AS4/8552 carbon/epoxy laminates. The study showed that, in a pure mode I state, results obtained via the two-step method were in agreement with a straightforward calculation of the elastic energy variation in the system. Results from VCCT calculations were slightly lower than those obtained through the two-step method using four node elements in plane strain. As expected, results from both models converge as element length decreases. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：993 / 998

页数：6

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