SysMLv1: TIP: You can strengthen the ill-defined semantics of Property 'aggregation' (an AggregationKind) by applying custom Stereotypes to a Property, documented with its intended use. Not perfect, but better than not. EXAMPLE: «assembled»
SysML: Syntax ain't Semantics: FUN CHALLENGE: SysMLv1 block property aggregation: 'The tornado chaser plane "has" a chaser car "with" a chaser team.'
UML2/SysML1.x: If AggregationKind 'shared' has meaning to you (and if you use it consistently without contradicting the use of 'composite' aggregation elsewhere in your model) by all means use it. Damn the purists! But it's going to die in SysMLv2 anyway.
Female 0.1" pin header strips - redefinition "ladder" view Gallery Tutorial TRAIL: A SysMLv1.6+ model of the Arduino Mega2560Rev3 microcontroller board Section 1: A Webel recipe for modelling microcontrollers in SysML Slide kind SysML Package Diagram
PAD for eliciting the letters of an English-language pangram Gallery Tutorial TRAIL: Theory and best practices for the Webel Parsing Analysis recipe for SysMLv1.6+ Section Slide kind SysML Block Definition Diagram (BDD)
MDSysML19SP3: Validation engine does not report value properties with AggregationKind other than composite
16: Overview of 'building' package Gallery Tutorial TRAIL: A SysML Pattern for Digital Twinning Section Slide kind SysML Package Diagram
Cameo Simulation Toolkit: GOTCHA: In the Variable pane reference properties are hidden by default (show them using the Options pulldown menu)
Focus BDD for block RefractingTelescope Gallery Tutorial TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model Section Slide kind SysML Block Definition Diagram (BDD)
The first known practical telescopes were refracting telescopes Gallery Tutorial TRAIL: Webel SysML Parsing Analysis example: Optical telescopes from Wikipedia: Structure and port-based light flow model Section Slide kind SysML Block Definition Diagram (BDD)
Association and Property - some cases Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:02: UML 101 for model-based systems engineering with SysML Slide kind UML Class Diagram
SysML "shared" Property challenge as objects: two Triangles share one LineSegment edge. Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 08:01: The building Blocks of SysML Slide kind hybrid diagram SysML Block Definition Diagram (BDD) UML Object diagram
SysML "shared" Property example: two Triangles share one LineSegment edge. Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 08:01: The building Blocks of SysML Slide kind SysML Block Definition Diagram (BDD)
SysML Reference Property representations Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 08:01: The building Blocks of SysML Slide kind SysML Block Definition Diagram (BDD)
A property typed by a Block that does not have composite aggregation is classified as a reference property. Source OMG Systems Modeling Language (SysML) 1.7beta1
A FlowProperty need not have 'composite' AggregationKind, it can be 'shared' or 'none'. (The MagicDraw/Cameo default is 'none').
These multiplicities may be assumed if not shown on a diagram. To avoid confusion, any multiplicity other than the default should always be shown on a diagram. Source OMG Systems Modeling Language (SysML) 1.7beta1
A part or shared association has a default multiplicity of [0..1] on the black or white diamond end. A unidirectional association has a default multiplicity of 1 on its target end. Source OMG Systems Modeling Language (SysML) 1.7beta1
Figure D.18 - Defining Structure of Power Subsystem (PowerSubsystem Breakdown) Gallery Tutorial TRAIL: The SysML-1.6 Hybrid SUV sample and specification diagrams in MagicDraw/Cameo (with annotations) [UNDERGOING UPDATE to SysML1.7] Section Section: SysML-1.6: HSUV sample Slide kind SysML Block Definition Diagram (BDD)
The dashed borders on Fuel denote a store, which keeps track of the amount and mass of fuel in the FuelTankAssy. This is also depicted in Figure D.18. Source OMG Systems Modeling Language (SysML) 1.6
The dashed borders on FrontWheel and BrakePedal denote the “use-not-composition” relationship depicted elsewhere in Figure D.16 and Figure D.18. Source OMG Systems Modeling Language (SysML) 1.6
Like UML, SysML defines no specific semantics or constraints for properties with shared aggregation, but particular models or tools may interpret them in specific ways. Source OMG Systems Modeling Language (SysML) 1.6
SysML also supports properties with shared aggregation, as shown by a white diamond symbol on an association. Source OMG Systems Modeling Language (SysML) 1.6
Figure D.16 - Defining Structure of the Hybrid SUV System (Hybrid SUV Breakdown) Gallery Tutorial TRAIL: The SysML-1.6 Hybrid SUV sample and specification diagrams in MagicDraw/Cameo (with annotations) [UNDERGOING UPDATE to SysML1.7] Section Section: SysML-1.6: HSUV sample Slide kind SysML Block Definition Diagram (BDD)
Figure D.16 defines components of the HybridSUV block. Note that the BrakePedal and WheelHubAssembly are used by, but not contained in, the PowerSubsystem block. Source OMG Systems Modeling Language (SysML) 1.6
