Normal Stress Differences and Yield Stresses in Attractive Particle Networks

Figure 3

(a) Typical response of shear stress over time for a hypothetical material exhibiting a shear yield stress, at a small, constant shear strain rate. Four different “yield” points are indicated (cf. [54, 73, 95]). The relative magnitudes of the identified stresses, , may vary. In the dotted profile, two additional yielding events are depicted at much larger values of shear strain. (b) Responses in step rate tests of a depletion flocculated particulate gel (or glass) at and , 1, 5, 10, and 30  (increasing from bottom to top). (Reproduced from Koumakis and Petekidis [60] with permission of The Royal Society of Chemistry.)

(a)

(b)