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Two-phase densification of cohesive granular aggregates

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Title: Two-phase densification of cohesive granular aggregates
Author(s): Gioia, Gustavo; Cuitiño, Alberto M.
Subject(s): granular materials
Abstract: When poured into a container, cohesive granular materials form low-density, open granular aggregates. If pressed upon with a ram, these aggregates densify by particle rearrangement. In this paper we introduce experimental evidence to the effect that particle rearrangement is a spatially heterogeneous phenomenon that occurs in the form of a phase transformation between two configurational phases of the granular aggregate. We then show that the energy landscape associated with particle rearrangement is consistent with our interpretation of the experimental results. Our conclusions are relevant to many engineering processes and natural phenomena.
Issue Date: 2001-05
Publisher: Department of Theoretical and Applied Mechanics (UIUC)
Series/Report: TAM Reports 970
Genre: Technical ReportArticle
Type: Text
Language: English
URI: http://hdl.handle.net/2142/254
ISSN: 0073-5264
Publication Status: published or submitted for publication
Peer Reviewed: is peer reviewed
Date Available in IDEALS: 2007-03-08
Is Version Of: Published as: Gustavo Gioia, Alberto M. Cuitiño, S.Zheng, and T.Uribe. Two-phase densification of cohesive granular aggregates. Physical Review Letters, Vol.88, No.20, 2002, pp. 204302/1-204302-4. DOI: 10.1103/PhysRevLett.88.204302. Copyright 2002 American Physical Society. http://hdl.handle.net/2142/985.
 

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  • Theoretical and Applied Mechanics (TAM) Technical Reports
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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