CMC-Vol. 32, No. 2, 2012

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EDITORIAL

Preface
Raimund Rolfes¹, Eelco Jansen², Börje Andersson³, Alexander Kling³
CMC-Computers, Materials & Continua, Vol.32, No.2, 2012
Abstract This article has no abstract. More >

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Modeling the Response of 3D Textile Composites under Compressive Loads to Predict Compressive Strength
M. Pankow¹, A.M. Waas², C.F. Yen³
CMC-Computers, Materials & Continua, Vol.32, No.2, pp. 81-106, 2012, DOI:10.3970/cmc.2012.032.081
Abstract The compression response of 3D woven textile composites (3DWC) that consist of glass fiber tows and a polymer matrix material is studied using a combination of experiments and finite element based analyses. A previous study reported by the authors consisted of an experimental investigation of 3DWC under high strain rate loading, Pankow, Salvi, Waas, Yen, and Ghiorse (2011). Those experimental results were explained by using the finite element method to analyze the high rate deformation response of representative volume elements (RVEs) of the 3DWC, Pankow, Waas, Yen, and Ghiorse (2012). In this paper, the same modeling strategy is used to… More >

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Virtual Delamination Testing through Non-Linear Multi-Scale Computational Methods: Some Recent Progress
O. Allix¹, P. Gosselet¹, P. Kerfriden², K. Saavedra³
CMC-Computers, Materials & Continua, Vol.32, No.2, pp. 107-132, 2012, DOI:10.3970/cmc.2012.032.107
Abstract This paper deals with the parallel simulation of delamination problems at the meso-scale by means of multi-scale methods, the aim being the Virtual Delamination Testing of Composite parts. In the non-linear context, Domain Decomposition Methods are mainly used as a solver for the tangent problem to be solved at each iteration of a Newton-Raphson algorithm. In case of strongly non linear and heterogeneous problems, this procedure may lead to severe difficulties. The paper focuses on methods to circumvent these problems, which can now be expressed using a relatively general framework, even though the different ingredients of the strategy have emerged… More >

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Modelling Mesh Independent Transverse Cracks in Laminated Composites with a Simplified Cohesive Segment Method
Luiz F. Kawashita¹, Alexandre Bedos², Stephen R. Hallett³
CMC-Computers, Materials & Continua, Vol.32, No.2, pp. 133-158, 2012, DOI:10.3970/cmc.2012.032.133
Abstract A methodology is proposed for modelling transverse matrix cracks in laminated composites in a three-dimensional explicit finite element analysis framework. The method is based on the introduction of extra degrees of freedom to represent the displacement discontinuity and the use of a cohesive zone model to determine damage evolution and crack propagation. The model is designed for the analysis of matrix cracks in laminates made of uni-directional fibre-reinforced plies, allowing several assumptions to be made which greatly simplify the algorithm. This was implemented in the commercial software Abaqus/Explicit as a user-defined element subroutine (VUEL). The methodology was verified via the… More >

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