dflx

FeConstraints.dflx(node='', bx='', by='', bz='', bx2='', by2='', bz2='', **kwargs)

Imposes a uniform magnetic flux B on an edge-element electromagnetic model.

Mechanical APDL Command: DFLX

Parameters:

nodestr

Nodes at which the edge-flux (AZ) constraints corresponding to the uniform magnetic flux are to be specified. Valid options are ALL (default) or Component Name. If ALL, constraints are applied to all selected nodes ( nsel ).

bxstr

Real components of magnetic flux B.

bystr

Real components of magnetic flux B.

bzstr

Real components of magnetic flux B.

bx2str

Imaginary components of magnetic flux B.

by2str

Imaginary components of magnetic flux B.

bz2str

Imaginary components of magnetic flux B.

Notes

The dflx command sets the constraints on the edge-flux (AZ) degrees of freedom to produce a uniform magnetic flux B in an edge-based electromagnetic analysis using one of these element types: SOLID226, SOLID227, SOLID236, or SOLID237. The command ignores the corner nodes of the elements (even if they were selected) and imposes the AZ-constraints on the mid-side nodes only. The AZ-constraints are imposed in the active Cartesian coordinate system. A non-Cartesian coordinate system will be ignored by the dflx command.

The edge-flux constraints at the mid-side nodes are derived from the magnetic vector potential A, which is related to the imposed magnetic flux B as follows:

\[equation not available\]

where r is the position of the mid-side node.

The dflx command creates a component named _DFLX for the constrained midside nodes. You can use this component to delete the constraints imposed by the dflx command.

This command is also valid in PREP7.