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Predictive model for the spherical indentation of composite laminates with finite thickness

The elastic response of composite laminates in contact with a stiff indenter is of immense importance in many applications. With the aim to further extend the knowledge on this subject, the contact problem of a stiff spherical indenter with a composite plate was simulated with a 2D axisymmetric model implemented on a commercial software. A parametric study was carried out numerically to study the effect of the different parameters on the force–indentation response. The results show that the indentation response of an orthotropic laminate is material independent and that it strongly depends on the laminate thickness. The lamina thickness has no significant effect on the force–indentation relation. Also, the effect of hole radius can be neglected for the hollow support experiment. Two simple equations were derived by normalizing and fitting FE results to predict the response of an orthotropic laminate of finite thickness in contact with stiff spherical indenter supported on two different boundary conditions (fully and hollow supported). The predictions of the derived equations were compared with experimental results and the available analytical models in the literature. The presented equations show an excellent correlation with the experimental investigations

This work has been partially funded by the Spanish Government (Ministerio de Economia y Competitividad) and the European Union under contracts DPI2012-34465 and MAT2013-46749-R

© Composite Structures, 2016, vol. 153, p. 468-477

Elsevier

Author: Wagih, Ahmed
Maimí Vert, Pere
Blanco Villaverde, Norbert
Trias Mansilla, Daniel
Date: 2016 October 1
Abstract: The elastic response of composite laminates in contact with a stiff indenter is of immense importance in many applications. With the aim to further extend the knowledge on this subject, the contact problem of a stiff spherical indenter with a composite plate was simulated with a 2D axisymmetric model implemented on a commercial software. A parametric study was carried out numerically to study the effect of the different parameters on the force–indentation response. The results show that the indentation response of an orthotropic laminate is material independent and that it strongly depends on the laminate thickness. The lamina thickness has no significant effect on the force–indentation relation. Also, the effect of hole radius can be neglected for the hollow support experiment. Two simple equations were derived by normalizing and fitting FE results to predict the response of an orthotropic laminate of finite thickness in contact with stiff spherical indenter supported on two different boundary conditions (fully and hollow supported). The predictions of the derived equations were compared with experimental results and the available analytical models in the literature. The presented equations show an excellent correlation with the experimental investigations
This work has been partially funded by the Spanish Government (Ministerio de Economia y Competitividad) and the European Union under contracts DPI2012-34465 and MAT2013-46749-R
Format: application/pdf
ISSN: 0263-8223 (versió paper)
1879-1085 (versió electrònica)
Document access: http://hdl.handle.net/10256/13160
Language: eng
Publisher: Elsevier
Collection: MINECO/PN 2013-2015/DPI2012-34465
MINECO/PE 2014-2017/MAT2013-46749-R
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.compstruct.2016.06.056
Articles publicats (D-EMCI)
Is part of: © Composite Structures, 2016, vol. 153, p. 468-477
Rights: Tots els drets reservats
Subject: Elements finits, Mètode dels
Finite element method
Materials compostos -- Deslaminatge
Composite materials -- Delamination
Resistència de materials
Strength of materials
Title: Predictive model for the spherical indentation of composite laminates with finite thickness
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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