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Breaking Down the Pieces (Block Definition Diagrams, Internal Block Diagrams)

Blocks are the fundamental units of structure and can be used on both Block Definition and Internal Block Diagrams to describe structural aspects of a system. The Block definition diagram is often a starting point for many engineers wanting to gain knowledge of a system and see how it is structured. The Block itself is made up of structure and this is represented by Features, this includes Parts which are themselves typed by other blocks for example a wheel assembly could have a disc caliper Part. There are also Value properties, that are items that have quantity and these represent physical and other measurable dimensions for example a car could have weight and color and have a 0-100 km acceleration time of 5 seconds. There are also interaction points that show the points that a block can interact with its environment.