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Finite element analysis of transient strain localization phenomena in frictional solids

Leroy, Y. and Ortiz, M. (1990) Finite element analysis of transient strain localization phenomena in frictional solids. International Journal for Numerical and Analytical Methods in Geomechanics, 14 (2). pp. 93-124. ISSN 0363-9061. https://resolver.caltech.edu/CaltechAUTHORS:20180104-142923188

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Abstract

Finite elements with embedded shocks are used to investigate transient strain localization phenomena in frictional solids. In particular, we seek to elucidate the effect of rate sensitivity and inertia on the development of shear bands in solids subjected to impulsive loading. As in the static case, our results show that shear banding may induce severe softening of the specimen even as the material steadily hardens. As expected, rate sensitivity retards the onset of structural softening and tends to stabilize the post-peak response. It is verified that the static solution is indeed recovered in the inviscid limit. Under dynamic conditions, shear bands are observed to propagate discontinuously, arresting and resuming propagation repeatedly before linking up with the boundary of the specimen. The direction of the band is equally unsteady. In addition, multiple shear banding, with the development of secondary and even tertiary bands, appears to be a prevalent mechanism at sufficiently high impact velocities.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://dx.doi.org/10.1002/nag.1610140203DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/nag.1610140203/abstractPublisherArticle
Additional Information:© 1990 John Wiley & Sons. Received 29 July 1988. Revised 10 April 1989.
Group:GALCIT
Issue or Number:2
Record Number:CaltechAUTHORS:20180104-142923188
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180104-142923188
Official Citation:Leroy, Y. and Ortiz, M. (1990), Finite element analysis of transient strain localization phenomena in frictional solids. Int. J. Numer. Anal. Meth. Geomech., 14: 93–124. doi: 10.1002/nag.1610140203
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84088
Collection:CaltechAUTHORS
Deposited By: Lydia Suarez
Deposited On:05 Jan 2018 19:42
Last Modified:03 Oct 2019 19:14

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