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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.; Zheng, S.; Uribe, T.
Subject(s): Granular materials
Abstract: When poured into a container, cohesive granular materials form low-density, open granular aggregates. If pressure is applied to these aggregates, they densify by particle rearrangement. Here we introduce experimental and computational results suggesting that densification by particle rearrangement occurs in the form of a phase transition between two configurational phases of the aggregate. Then we show that the energy landscape associated with particle rearrangement is nonconvex and therefore consistent with our interpretation of the experimental and computational results. Our conclusions are relevant to many technological processes and natural phenomena.
Issue Date: 2002
Publisher: American Physical Society
Citation Info: 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.
Genre: Article
Type: Text
Language: English
URI: http://hdl.handle.net/2142/985
DOI: 10.1103/PhysRevLett.88.204302
Publication Status: published or submitted for publication
Peer Reviewed: is peer reviewed
Rights Information: Copyright owned by American Physical Society 2002.
Date Available in IDEALS: 2007-06-19
Has Version(s): Previously released as TAM Report 970. http://hdl.handle.net/2142/254.
 

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