  We give a brief introduction to smoothed particle hydrodynamics methods for
continuum mechanics. Specifically, we present our 3D SPH code to simulate and
analyze collisions of asteroids consisting of two types of material: basaltic
rock and ice. We consider effects like brittle failure, fragmentation, and
merging in different impact scenarios. After validating our code against
previously published results we present first collision results based on
measured values for the Weibull flaw distribution parameters of basalt.
