DTPMAX
| (Simulation control - 3D) |
|---|
| Last updated on : 30-07-2014 |
DTPMAX MaxTempInc, t_TempMin, t_TempMax
| OPERAND | DESCRIPTION | DEFAULT |
|---|---|---|
| MaxTempInc | Maximum increment in temperature per step | 0 |
| t_TempMin | Minimum time step allowed for a solution step | 0 |
| t_TempMax | Maximum time step allowed for a solution step | 0 |
DEFINITION
DTPMAX specifies the time stepping control based on the maximum temperature increment per time step.
REMARKS
MaxTempInc specifies the maximum temperature increment per time step in heat transfer calculation. The time step calculated by MaxTempInc will control the time step for deformation when STPDEF = 3. If MaxTempInc = 0.0 then this option is ignored. If MaxTempInc ≠ 0.0 and STPDEF ≠ 3 then MaxTempInc controls when a solution will substep. If the temperature change over a time step Δt is greater than MaxTempInc, the simulation will substep. The substepping time (
) will be determined by the equation: | 
|
—|—
The simulation will continue to substep until the original time step Δt has been reached. The substeps are bounded by the minimum time step value 
and the time step Δt, or
|
—|—
If MaxTempInc ≠ 0.0 and STPDEF = 3 (Temperature) then the time steps will be defined solely through temperature changes in the objects. The first time step (Δt) will be defined by DSMAX/DTMAX. Thereafter, each subsequent time step will be defined by the equation:
|
—|—
The new time step is bounded by the minimum time step and the maximum time step 
, or
|
—|—
RELATED TOPICS
Step Definition Keyword: STPDEF, DTMAX, DSMAX