Mike,
Creo Simulate is based on the p-version of the finite element method, in which the fidelity of the finite element model is increased by raising the polynomial orders of the finite element basis functions. This approach is in contrast to traditional h-version finite element programs, in which the fidelity of the model is increased by adding additional elements. Also, Creo Simulate has convergence algorithms that automatically increase the polynomial orders so that accurate solutions are efficiently found without requiring manual intervention from the user.