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Dynamic Compressive Failure of a Glass Ceramic under Lateral Confinement

Chen, Weinong and Ravichandran, G. (1997) Dynamic Compressive Failure of a Glass Ceramic under Lateral Confinement. Journal of the Mechanics and Physics of Solids, 45 (8). pp. 1303-1328. ISSN 0022-5096. https://resolver.caltech.edu/CaltechAUTHORS:20150226-112805981

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Abstract

An experimental technique has been developed for imposing controlled multi-axial loading on cylindrical ceramic specimens. The multi-axial loading is achieved by superposing passive lateral confinement upon axial compression. Descriptions of the experimental technique, as well as experimental results for a machinable glass ceramic, Macor, are presented. The axial compression was applied using a Kolsky (split Hopkinson) pressure bar modified to apply a single loading pulse. Experiments were also conducted under quasi-static conditions using a servo-hydraulic load frame. The specimens were confined laterally using shrink-fit metal sleeves. The confining pressure ranges from 10 to 230 MPa. Under both quasi-static and dynamic loading conditions, the experimental results showed that the failure mode changes from fragmentation by axial splitting without confinement to localized faulting under moderate lateral confinement (10–120 MPa). The process of fault initiation was characterized in detail for specimens under moderate confinement. Based on the experimental results, a compressive failure mechanism was proposed for brittle materials under moderate lateral confinement. The Mohr-Coulomb failure criterion was found to fit the experimental strength data. The failure criterion is shown to be consistent with the analytical results from a micromechanical model for brittle failure. Transition from brittle to ductile behavior was observed under high confinement (230 MPa).


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/S0022-5096(97)00006-9 DOIArticle
http://www.sciencedirect.com/science/article/pii/S0022509697000069PublisherArticle
ORCID:
AuthorORCID
Ravichandran, G.0000-0002-2912-0001
Additional Information:© 1997 Elsevier Science Ltd. Received 19 April 1996; in revised form 11 December 1996. The support of this research by the U.S. Army Research Office under Grant No. DAALO3-02-G-0192 to the California Institute of Technology is gratefully acknowledged. The support of the National Science Foundation (Grant No. CMS-9157846) and the Dow Chemical Company for research on Constitutive and Failure Behavior of Ceramic Materials has greatly benefited the present investigation.
Group:GALCIT
Funders:
Funding AgencyGrant Number
Army Research Office (ARO)DAALO3-02-G-0192
NSFCMS-9157846
Dow Chemical CompanyUNSPECIFIED
Subject Keywords:dynamic failure; ceramic material; Kolsky bar; multi-axial loading; failure criterion
Issue or Number:8
Record Number:CaltechAUTHORS:20150226-112805981
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150226-112805981
Official Citation:Weinong Chen, G. Ravichandran, Dynamic compressive failure of a glass ceramic under lateral confinement, Journal of the Mechanics and Physics of Solids, Volume 45, Issue 8, August 1997, Pages 1303-1328, ISSN 0022-5096, http://dx.doi.org/10.1016/S0022-5096(97)00006-9. (http://www.sciencedirect.com/science/article/pii/S0022509697000069)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55258
Collection:CaltechAUTHORS
Deposited By: Cheryl Gause
Deposited On:26 Feb 2015 22:56
Last Modified:09 Mar 2020 13:19

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