Simple Nonlinear Model for Elastic Response of Cohesionless Granular Materials
Publication: Journal of Engineering Mechanics
Volume 128, Issue 9
Abstract
A constitutive model based on hyperelasticity is proposed to capture the resilient (elastic) behavior of granular materials. Resilient behavior is a widely accepted idealization of the response of unbound granular layers of pavements, following shakedown. The coupling property of the proposed model accounts for shear dilatancy and pressure-dependent behavior of the granular materials. The model is calibrated using triaxial resilient test data obtained from the literature. A statistical comparison is made between the predictions of the proposed model and a few of the prominent models of resilient response. The proposed coupled hyperelastic model yields a significantly better fit to the experimental data. It also offers a computational efficiency when implemented in a classical nonlinear finite elemental framework.
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Information
Published In
Journal of Engineering Mechanics
Volume 128 • Issue 9 • September 2002
Pages: 969 - 978
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Mar 12, 2001
Accepted: Jan 11, 2002
Published online: Aug 15, 2002
Published in print: Sep 2002
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