Prediction of the failure locus of C/PEEK composites under transverse compression and longitudinal shear through computational micromechanics

By E. Totry, Carlos Gonz'alez, Javier Llorca. 2008

154 citations recorded by the source corpus.

The potential of computational micromechanics to predict the failure locus of a unidirectional C/PEEK composite subjected to transverse compression and longitudinal shear was established. Numerical simulations were compared with the experimental results of Vogler and Kyriakides [Vogler TJ, Kyriakides S. Inelastic behavior of an AS4/PEEK composite under combined transverse compression and shear. Part I: Experiments. Int J Plasticity 1999;15:783–806], which contain detailed information of the matrix and fiber properties as well as the failure micromechanisms during multiaxial loading. Analyses were based in the finite element analysis of a three-dimensional representative volume element of the lamina microstructure and included the main deformation and failure mechanisms observed experimentally, namely matrix shear yielding and interface decohesion. In addition, the numerical predictions of the failure locus for composites with strong and weak interfaces were compared with those obtained by current phenomenological failure models to establish the accuracy and range of validity of these criteria.

Subfields: Building and Construction, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/4977d4924c451e9d74ac959d9377f0fcf305b2c2

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In Building and Construction

In Mechanics of Materials

Citations in the corpus

Micromechanical analysis of polymer composites reinforced by unidirectional fibres: Part I – Constitutive modelling (2013, methodology): “Llorca and co-workers (e.g., González and LLorca, 2007; Canal et al., 2009; Totry et al., 2008a,b) have been conducting micromechanical analyses on representative volume elements (RVEs) by applying an elasto-plastic constitutive model to the matrix and implementing cohesive elements in the…”
Three-dimensional invariant-based failure criteria for fibre-reinforced composites (2015, methodology): “Therefore, a recently proposed approach based on426 computational micro-mechanics (Totry et al., 2008a,b; Melro et al., 2013b)427 is used here for generation of failure envelopes corresponding to stress states428 that cannot be experimentally imposed to the material.429 The approach requires the…”