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Constitutive modeling of fiber composites with a soft hyperelastic matrix

Lόpez Jiménez, Francisco and Pellegrino, Sergio (2012) Constitutive modeling of fiber composites with a soft hyperelastic matrix. International Journal of Solids and Structures, 49 (3-4). pp. 635-647. ISSN 0020-7683. doi:10.1016/j.ijsolstr.2011.11.006.

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This paper presents an experimental and numerical study of unidirectional carbon fiber composites with a silicone matrix, loaded transversally to the fibers. The experiments show nonlinear behavior with significant strain softening under cyclic loading. The numerical study uses a plane-strain finite element continuum model of the composite material in which the fiber distribution is based on experimental observations and cohesive elements allow debonding to take place at the fiber/matrix interfaces. It is found that accurate estimates of the initial tangent stiffness measured in the experiments can be obtained without allowing for debonding, but this feature has to be included to capture the non-linear and strain-softening behavior.

Item Type:Article
Related URLs:
URLURL TypeDescription
Pellegrino, Sergio0000-0001-9373-3278
Additional Information:© 2011 Elsevier Ltd. Received 22 April 2011. Revised 21 October 2011. Available online 19 November 2011. This study was supported with funding from the Keck Institute of Space Studies at Caltech and an Earl K. Seals fellowship.
Group:Keck Institute for Space Studies, GALCIT
Funding AgencyGrant Number
Keck Institute for Space Studies (KISS)UNSPECIFIED
Earl K. Seals fellowshipUNSPECIFIED
Subject Keywords: Fiber composites; Hyperelastic matrix; Strain softening; Random microstructure
Issue or Number:3-4
Record Number:CaltechAUTHORS:20120321-092722311
Persistent URL:
Official Citation:Francisco López Jiménez, Sergio Pellegrino, Constitutive modeling of fiber composites with a soft hyperelastic matrix, International Journal of Solids and Structures, Volume 49, Issues 3–4, February 2012, Pages 635-647, ISSN 0020-7683, 10.1016/j.ijsolstr.2011.11.006. (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29792
Deposited By: Ruth Sustaita
Deposited On:21 Mar 2012 16:43
Last Modified:09 Nov 2021 19:30

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