The vector stencils library "Internal block diagram" contains 22 SysML symbols.
Use it to design your internal block diagrams using ConceptDraw PRO diagramming and vector drawing software.
"Internal Block Diagram
An internal block diagram is based on the UML composite structure diagram, with restrictions and extensions as defined
by SysML. ...
Four general categories of properties of blocks are recognized in SysML: parts, references, value properties, and
constraint properties. ... A part or value property is always shown on an internal block diagram with a solid-outline box. A reference property is shown by a dashed-outline box, consistent with UML. Ports are special cases of properties, and have a variety of notations... Constraint properties and their parameters also have their own notations... " [www.omg.org/spec/SysML/1.3/PDF]
The SysML shapes example "Design elements - Internal block diagram" is included in the SysML solution from the Software Development area of ConceptDraw Solution Park.