Block Flow Diagram Definition. It is an alternative to using a circle. Blocks are the elements of definition because they have a name only.
The block definition diagram bdd is used to define each block s characteristics in terms of it s structural and behavioural features and relationships between the blocks such as hierarchical relationships. The figure below illustrates the vehicle structure of defined blocks in the sysml block definition diagram. A rectangle is usually used to show a piece of equipment and labels illustrate function.
System system component part external systems or items that flow through the system as well as conceptual entities or logical abstractions.
These are also called block flow diagrams and schematic flow diagrams. A block is a modular unit of structure in sysml that is used to define types of physical entities e g. Sysml block definition diagram block definition diagram defines the features of a block and any relationships between blocks such as associations generalizations and dependencies in terms of properties operations and relationships for example a system hierarchy or a system classification tree. Each block can depict a single piece of equipment or a stage in a process.
