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Modeling Tutorial

Simplification of Bond Graph Models

Navigation: Modeling Tutorial > Bond Graphs >

Simplification of Bond Graph Models

When a bond graph model has been created by converting all elements of the iconic diagram into bond graph elements and connecting the elements, simplifications can be performed. This can be easily done by applying the following set of rules (the bonds that have no half arrow, are allowed in both orientations).

1.	Eliminate loose junctions.

EliminatingLooseJunctions

2.	Eliminate junctions.

EliminatingJunctions

3.	Melt equal junctions.

EliminatingEqualJunctions

4.	Eliminate sources with a zero output.

EiminatingZeroSources

5.	Eliminate junction in combination with a sign change on the source element.

EliminatingBonds

6.	Eliminate a double difference (two 0-junctions coupled with two 1-junctions)

EliminatingDoubleDifference

Note

Simplification rules 1, 2, 3 and 6 can be performed automatically in 20-sim using the Simplify Model command.