Set this parameter equal to the name of the amplitude curve that defines the magnitude of the electric charge during the step. If this parameter is omitted, the reference magnitude is applied immediately at the beginning of the step or linearly over the step, depending on the value assigned to the AMPLITUDE parameter on the STEP option (Defining an Analysis).
OP
Set OP=MOD (default) for existing CECHARGEs to remain, with this option modifying existing electric charges or defining additional electric charges.
Set OP=NEW if all existing CECHARGEs applied to the model should be removed.
Optional, mutually exclusive parameters for matrix generation and direct-solution steady-state dynamics analysis
IMAGINARY
Include this parameter to define the imaginary (out-of-phase) part of the concentrated electric charges.
REAL
Include this parameter (default) to define the real (in-phase) part of the concentrated electric charges.
Data lines to define concentrated electric charges
First line
Node number or node set label.
Leave blank.
Reference electric charge magnitude. (Units of C.)
Repeat this data line as often as necessary to define concentrated electric charges at various nodes or node sets.