Transient stress evolution in repulsion and attraction dominated glasses

Abstract

We present results from microscopic mode coupling theory generalized to colloidal dispersions under shear in an integration-through-transients formalism. Stress-strain curves in start-up shear, flow curves, and normal stresses are calculated with the equilibrium static structure factor as only input. Hard spheres close to their glass transition are considered, as are hard spheres with a short-ranged square-well attraction at their attraction dominated glass transition. The consequences of steric packing and physical bond formation on the linear elastic response, the stress release during yielding, and the steady plastic flow are discussed and compared to experimental data from concentrated model dispersions.

arXiv commentJ. Rheol., 58, in print

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Cited by in corpus (6)

• Start-up Shear of Concentrated Colloidal Hard Spheres: Stresses, Dynamics and Structure
• Microscopic theory of two-step yielding in attractive colloids
• Nonlinear rheology of dense colloidal systems with short-ranged attraction: A mode-coupling theory analysis
• Continuum modelling of shear start-up in soft glassy materials
• Microscopic Activated Dynamics Theory of the Shear Rheology and Stress Overshoot in Ultra-Dense Glass-Forming Fluids and Colloidal Suspensions
• Microscopic Basis for Recovery Rheology and the Nonequilibrium Structure,Yielding, and Flow of Dense Particle Suspensions