Fixed Time Stepping |
 
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Fixed Time Stepping |
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When you specify a fixed time step, the simulation proceeds from the start time to the end time using the fixed time step specified. Generally speaking, a fixed time step is used in analyses where the nature of structural response is broadly similar throughout. For example, in the case of a rigid riser, and/or benign rather than extreme loading conditions. It is well suited to lengthy simulations for a stable model, and is the preferred option provided the required time step is reasonable.
•*TIME is used to define time parameters for an analysis. Specifically, the STEP=FIXED inputs are used to specify fixed time step data.
If you would like to see an example of how this keyword is used in practice, refer to A01 - Deepwater Drilling Riser.