Under an applied traction, highly concentrated suspensions of solid particles in fluids can turn from a state in which they flow to a state in which they counteract the traction as an elastic solid: a shear-jammed state. Remarkably, the suspension can turn back to the flowing state simply by inverting the traction. A tensorial model is presented and tested in paradigmatic cases. We show that, to reproduce the phenomenology of shear jamming in generic geometries, it is necessary to link this effect to the elastic response supported by the suspension microstructure rather than to a divergence of the viscosity.

中文翻译：

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具有弹性约束的连续模型中悬架的剪切干扰和脆性

在施加的牵引力下，流体中固体颗粒的高浓度悬浮液可以从它们流动的状态转变为作为弹性固体抵消牵引力的状态：剪切堵塞状态。值得注意的是，悬架可以通过反转牵引力而恢复到流动状态。张量模型在典型案例中被提出和测试。我们表明，为了在通用几何形状中重现剪切堵塞现象，有必要将这种效应与悬浮微结构支持的弹性响应联系起来，而不是与粘度的发散联系起来。