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A micro-mechanical study of peak strength and critical state

Jerves, Alex X. and Andrade, José E. (2016) A micro-mechanical study of peak strength and critical state. International Journal for Numerical and Analytical Methods in Geomechanics, 40 (8). pp. 1184-1202. ISSN 0363-9061. https://resolver.caltech.edu/CaltechAUTHORS:20160523-075406122

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Abstract

We present a micro-mechanical analysis of macroscopic peak strength, critical state, and residual strength in two-dimensional non-cohesive granular media. Typical continuum constitutive quantities such as frictional strength and dilation angle are explicitly related to their corresponding grain-scale counterparts (e.g., inter-particle contact forces, fabric, particle displacements, and velocities), providing an across-the-scale basis for a better understanding and modeling of granular materials. These multi-scale relations are derived in three steps. First, explicit relations between macroscopic stress and strain rate with the corresponding grain-scale mechanics are established. Second, these relations are used in conjunction with the non-associative Mohr–Coulomb criterion to explicitly connect internal friction and dilation angles to the micro-mechanics. Third, the mentioned explicit connections are applied to investigate, understand, and derive micro-mechanical conditions for peak strength, critical state, and residual strength.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1002/nag.2478DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/nag.2478/abstractPublisherArticle
Additional Information:© 2015 John Wiley & Sons, Ltd. Manuscript Received: 11 NOV 2014. Manuscript Revised: 24 OCT 2015. Manuscript Accepted: 26 OCT 2015. First published: 9 December 2015.
Issue or Number:8
Record Number:CaltechAUTHORS:20160523-075406122
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160523-075406122
Official Citation:Jerves, A. X., and Andrade, J. E. (2016) A micro-mechanical study of peak strength and critical state. Int. J. Numer. Anal. Meth. Geomech., 40: 1184–1202. doi: 10.1002/nag.2478
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:67242
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 May 2016 19:01
Last Modified:03 Oct 2019 10:04

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