Use Previous Design Study
Select the Use previous design study check box on the MEC/T Temperature or the MEC/T History Temperature dialog boxes to calculate the temperatures for the load created from a thermal analysis that is run as a part of a design study you previously defined.
If you deselect this check box, Creo Simulate automatically runs the thermal analysis before running any structural analysis that includes the load.
If you include the structural analysis that uses the MEC/T temperature load or the MEC/T history temperature load in a sensitivity or optimization design study, Creo Simulate ignores these items, as well as any design study specified. In this case, Creo Simulate automatically runs the thermal analysis for whatever parameter settings are required in the sensitivity or optimization design study.