Tolerances for IF-conditions too strict?
I use a *DOWHILE-Loop to generate new load steps as long as the previous load steps reach their maximum load. I use the command *GET,time_LS,ACTIVE,0,set,time at the end of every *DO trip to check the parameter time_LS against the assigned maximum time of the load step LF. If time_LS less than LF, the loop index LS_check becomes 0 and the *DOWHILE-loop ends.
However, it seems that tolerance based on which ANSYS determines if the IF-conditions is met are quite strict. If the remaining time increment at the end of the load step is around 0.9e-8 or greater ANSYS considers the condition to end the *DOWHILE-loop as met (i.e. time_LS < LF), although according to a note the maximum load of the load step was reached. In previous load steps with a remaining time increment of around 1.0e-9 and less, time_LS was considered equal to LF and the *DOWHILE-loop continued.
The output says:
*** LOAD STEP 15 SUBSTEP 21 COMPLETED. CUM ITER = 123
*** TIME = 15.0000 TIME INC = 0.914890E-08 MAX DISPLACEMENT = -19.15
*** NOTE *** CP = 249821.406 TIME= 10:31:00
Maximum load for load step 15 was reached.
*GET TIME_LS FROM ACTI ITEM=SET TIME VALUE= 15.0000000
*IF time_LS ( = 15.0000 ) LT
LF ( = 15.0000 ) THEN
PARAMETER LS_CHECK = 0.000000000
Is there an exact parameter or flag to determine wether the maximum load for a load step was reached or not?
So long, and thanks for all the fish!