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 Open-hole tensile strength of quasi-isotropic laminates
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/5396

title: Open-hole tensile strength of quasi-isotropic laminates
authors: Morais, Alfredo Balacó de
keywords: Polymer-matrix composites
Stress concentrations
Finite Element Analysis (FEA)
Failure criterion
issue date: 2000
publisher: Elsevier
abstract: In this work, a new approach is suggested for predicting the open-hole tensile strength of quasi-isotropic [0 degrees/+/-45 degrees/90 degrees](ns) laminates. The well known size dependency of the layer longitudinal tensile strength is explicitly taken into account. The interest in such an approach lies in avoiding material-dependent empirical parameters, e.g. characteristic distances, whose physical meaning is not always clear. In situ fibre strengths were estimated by using longitudinal stresses obtained from finite-element models and experimental data available in the references. The estimated size-dependent fibre strengths were found to be consistent with typical Weibull distributions. It is also worth emphasising that mixed 2D/3D finite-element models were used in this work, since the common 2D models proved to be significantly inaccurate.
URI: http://hdl.handle.net/10773/5396
ISSN: 0266-3538
publisher version/DOI: http://dx.doi.org/10.1016/S0266-3538(00)00089-0
source: Composites Science and Technology
appears in collectionsMEC - Artigos

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