Exact Solutions for Powder Plastic Materials
A comparative study of two analytic solutions for the classical plasticity of incompressible materials and a plasticity model for powder materials is made to reveal an effect of plastic compressibility on qualitative behaviour of the velocity field in the vicinity of maximum friction surfaces.
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
O. Chesnikova et al., "Exact Solutions for Powder Plastic Materials", Advanced Materials Research, Vols. 89-91, pp. 221-226, 2010