Deforming RBDs. Simple setup that uses a SOP solver and deforms the geo at points of impact.
The impact data is already available in the SOP solver, the normal is the impact direction and there is a pscale attribute for the magnitude of the impact. In this setup I just used attributeTransfer to get the impact data onto the mesh, then a vopsop to deform the mesh. There is a minimum impact so that resting objects don't get deformed.