Self-assembly in a near-frictionless granular material: Conformational structures and transitions in uniaxial cyclic compression of hydrogel spheres

Detecting network structures in packings of cyclically loaded spheres requires math. Lots of math….

D.M. Walker, A. Tordesillas, N. Brodu, J.A. Dijksman, R.P. Behringer, G. Froyland — Soft Matter 11, 2157–2173 (2015)