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Onset of transition for cohesive and viscous granular flows
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0001-6016-6342
Clarkson University, Potsdam, NY.
1998 (English)In: Journal of engineering mechanics, ISSN 0733-9399, E-ISSN 1943-7889, Vol. 124, no 10, p. 1073-1079Article in journal (Refereed) Published
Abstract [en]

A theory for determining the onset of rapid flow or termination of quasi-static flow in a cohesive granular material mixed in a viscous interstitial fluid is presented. This theory is based on a one-dimensional model introduced in an earlier paper. Linear stability analysis is used to find the combination of material properties and flow rate for which a quasi-static flow becomes unstable, indicating the onset of rapid flow. This theory yields a quantitative criterion to select appropriate constitutive laws for viscous and cohesive granular material. This criterion is a linear approximation of the theoretical result. While it provides the critical condition for quasi-static flow to terminate, it does not give the transitional constitutive law before a rapid flow is fully developed, for which a second power law dependence on the strain rate applies. Nonetheless, the analysis and modeling effort presented in this work are necessary first steps toward a general quantification of how granular materials, with identical physical composition, can behave in drastically different ways.

Place, publisher, year, edition, pages
1998. Vol. 124, no 10, p. 1073-1079
National Category
Applied Mechanics Other Mechanical Engineering
Research subject
Solid Mechanics; Computer Aided Design
Identifiers
URN: urn:nbn:se:ltu:diva-14301DOI: 10.1061/(ASCE)0733-9399(1998)124:10(1073)ISI: 000076046100003Scopus ID: 2-s2.0-0032193872Local ID: da73dfa0-6da5-11db-83c6-000ea68e967bOAI: oai:DiVA.org:ltu-14301DiVA, id: diva2:987256
Note
Godkänd; 1998; 20061106 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Aidanpää, Jan-Olov

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