Granular dilatancy and the plasticity of glassy lubricants

Journal Article · Mon Mar 01 04:00:00 EST 1999 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie9804529· OSTI ID:338588

Goddard, J D ^[1]

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1. Univ. of California, San Diego, La Jolla, CA (United States). Dept. of Applied Mechanics and Engineering Sciences

This note is concerned with various experimental observations of plastic-flow behavior in presumably glassy states of low-molecular-weight lubricants subject to high shear rates and confining pressures. It is proposed here that the nearly linear relation found between shear stress and pressures can be attributed to shear-induced volume change, qualitatively the same as that associated with Reynolds dilatancy and shear strength in a hypothetical frictionless granular material. Recent computer simulations of the latter lend quantitative support to this hypothesis.

• OSTI ID: 338588
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 3 Vol. 38; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
COMPUTERIZED SIMULATION
DILATANCY
LUBRICANTS
MOLECULAR WEIGHT
PLASTICITY
RHEOLOGY
SHEAR PROPERTIES