SYSML11 — Section: 9.3.2

NAME - JUNCTION PORT Limited ability to model certain typs of physical interfaces in SysML such as mechanical, electrical, optical, and thermal, where the interface does not explicitly represent a flow or a service. An example is the mechanical interface between two parts at their mating surface. An approach was included in a recent paper called "Modeling Continuous System Dynamics in SysML" by Thomas Johnson, Jonathan Jobe, Christiaan Paredis, Roger Burkhart, Proceedings of the IMECE 2007, Nov ' 2007, which is available on the omg sysml website. A stereotype for a junction is introducted to model a mechanical interface (Flange in Fig 4). This concept can be applied more generally to model a mechanical interface. The proposal is to stereotype a port as a <<junction port>> that is typed by a Junction, which would also be a stereotype. The junction would have properties such as a position, and force, and include constraints on its properties such as conservation of mass flow, energy flow, etc. Several subclasses of junction can be defined for mechanical, electrical, thermal, optical, other electromagnetic interfaces, each of which may have different constraints applied. The concstraints can be used in parametrics.

Disposition: See issue 11628 for resolution