Uniaxial compression of 2d and 3d packings : electrical conductivity measurements

M. Ammi , T. Travers , D. Bideau , A. Gervois , J.C. Messager , J.P. Troadec

We measured the conductivity of 2d and 3d packings of conducting grains under a uniaxial vertical pressure. The conductance as a function of stress is a power law with an exponent which is different from the microscopic Hertz exponent. We propose a simple theoretical explanation.

Mots clés: electrical conductivity of solids

Domaines: Articles anciens

M. Ammi, T. Travers, D. Bideau, A. Gervois, J.C. Messager, et al.. Uniaxial compression of 2d and 3d packings : electrical conductivity measurements. Journal de Physique, 1988, 49 (2), pp.221-226. ⟨10.1051/jphys:01988004902022100⟩. ⟨jpa-00210687⟩