We use a smooth particle hydrodynamics method (SPH) to simulate colliding rocky and icy bodies from cm-scale to hundreds of km in diameter, in an effort to define self-consistently the threshold for catastrophic disruption. Unlike previous efforts, this analysis incorporates the combined effects of material strength (using a brittle fragmentation model) and self-gravitation, thereby providing results in the ``strength regime'' and the ``gravity regime'', and in between. In each case, the structural properties of the largest remnant are examined.
@article{arxiv.astro-ph/9907117,
title = {Catastrophic disruptions revisited},
author = {W. Benz and E. Asphaug},
journal= {arXiv preprint arXiv:astro-ph/9907117},
year = {2009}
}