Simple nonlinear model for elastic response of cohesionless granular materials

E. Taciroglu, K. D. Hjelmstad

Research output: Contribution to journalArticle

9 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)969-978
Number of pages10
JournalJournal of Engineering Mechanics
Volume128
Issue number9
DOIs
StatePublished - Sep 1 2002
Externally publishedYes

Keywords

  • Elasticity
  • Finite element method
  • Granular materials
  • Pavements

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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