... focused on the quasistatic rheology of a granularsystem, so why is all of this related to the description of its statics? As a matter of fact, the static properties of the studied sample are responsible ... horizontal position of the apex of thepile – also, changing the sign of x changes that of the shear σxz. More generally,the stress state of the jammed grain packing is assumed to be of the formσxx= ... coef-ficients of the considered system, as a function of the geometry of the packingarrangements.In general, only bounds for these coefficients can be found, but the computation of the values of Cαβγ...