Available when the AnalysisType is set to Transient.
Defines the time interval of the coupling steps.
Default value of None. A value must
be specified before a Solve operation is attempted.
Possible values:
When DurationOption is set to
NumberOfSteps, accepts real values greater than0.0.When DurationOption is set to
EndTime, accepts real values1e-30 [s] ≤ x ≤ EndTime.
May be defined by an expression, as follows:
May always be defined as an immutable value, as described by Creating an Expression for an Immutable Single Value in the System Coupling User's Guide.
May be defined as a mutable value when DurationOption is set to
EndTime. The time step size may vary over the duration of the analysis as determined by the expression, with the step size recalculated at the beginning of each step. For more information, see Creating an Expression for a Mutable Time Step Size in the System Coupling User's Guide.
If the coupled analysis is defined in terms of time (a transient analysis), then:
A coupling step is associated with a time interval. The TimeStepSize setting specifies the time interval associated with each coupling step (in seconds).
The final coupling step size is reduced automatically, if needed, so that the specified end time is respected.
If units are not specified, then seconds
[s]are used.When defined using real values, the coupling step size is fixed for the duration of the analysis but can be changed when restarting the analysis.
Tip: Shown in the GUI as the Solution Control | Time Step Size setting.