On the Granular Stress-Geometry Equation [PDF]
Eric DeGiuliUsing discrete calculus, we derive the missing stress-geometry equation for rigid granular materials in two dimensions, in the mean-field approximation. We show that (i) the equation imposes granularity in a literal sense; (ii) we recover anisotropic elasticity, without reference to strain, and (iii) the packing fabric plays an essential role.View original: http://arxiv.org/abs/1303.0260
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