1. A program product for modeling solids mechanics, said program product comprising computer executable instructions stored in a computer readable medium that when executed by a computer cause the computer to: obtain load data to apply to the solids; obtain load path data to apply to the solids; select a model from a plurality of models stored in a model library, said plurality of models comprising at least a constitutive model; input said load data and said load path data to said selected model to generate model output data; and, display said model output data in a graphical format.