  Three dimensional molecular dynamics simulations of cohesive dissipative
powders under a plane shear are performed. We find the various phases depending
on the dimensionless shear rate and the dissipation rate as well as the
density. We also find that the shape of clusters depends on the initial
condition of velocities of particles when the dissipation is large. Our simple
stochastic model reproduces the non-Gaussian velocity distribution function
appearing in the coexistence phase of a gas and a plate.
