Features are used in computer aided geometric modeling to encapsulate primitive and lower-abstraction entities to compose higher-level complex entities in order to support faster modeling, consistent data structures between features within the model, and feature-level reasoning that extends beyond reasoning supported by the primitives. In this paper, this idea is extended to computer-aided function modeling. Four function modeling features, which mainly operate on material flows but also involved energy flows, are formally defined. These features are: (1) Convergize_EM, (2) Handover_E, (3) Change_M, and (4) Changeover_EM. Each feature is composed of formerly established functional primitives that are formally defined, and by connecting those primitives in a controlled topology enforced by a feature-level grammar. The ability of these features to support consistent function modeling and model-based reasoning is illustrated using applications, both at the device level (simpler models) and at the system level (more complex models).

This content is only available via PDF.
You do not currently have access to this content.