1. A method for analyzing a mechanical system, the method comprising: using a computer program product, importing from an engineering design software program data related to a mechanical assembly; using the computer program product, selecting two or more points and one or more connections associated with the mechanical assembly; based on the selected two or more points, the selected one or more connections, and the imported data, determining one or more three-dimensional model solutions; presenting the one or more three-dimensional model solutions to a user; and selecting a model from the presented three-dimensional model solutions.