Synopsis

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.VC 2014 The Society of Rheology