Physical properties of a vertex for problems of electrostatics.
Details
The LabelVertexES object represents physical data applicable to the vertex label for
electrostatic analysis problems.
When you need to set or modify physical parameters for the block label, you have to get the LabelVertexESobject using the Content property of the Label object, modify the LabelVertexESobject using
its properties and then put it back in the Label object assigning your LabelVertexES
to the Content property of your Label object.
The LabelVertexES object inherits methods and properties from its base class LabelVertex. Here the LabelVertex's properties take the
following meaning:
Sets and gets the known value of the electric charge at the vertex.
The electric charge specified at a point of the xy-plane corresponds to a charged string, which
is perpendicular to the plane of the model, and is described by the linear charge density. In
the axisymmetric case the vertex charge represents a charged circle around the axis of symmetry
or a point charge located on the axis. To incorporate both these cases a total charge value is
associated with the vertex. For the charged circle the total charge is connected with its linear
density by the relationship
q = 2pr×r.