Rearrangements and dilatancy for sheared dense materials.
Constitutive equations are proposed for dense materials, based on the identification of two types of free-volume activated rearrangements associated with shear and compaction. Two situations are studied: the case of an amorphous solid in a stress-strain test, and the case of a lubricant in tribology test. Varying parameters, strain softening, shear thinning, and stick-slip motion can be observed.
Lemaître
Anaël
A
Department of Physics, University of California, Santa Barbara, California 93106, USA.
D007700:Kinetics; D008962:Models, Theoretical; D033081:Shear Strength