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Editing Time in Result files

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Old   May 10, 2007, 12:15
Default Editing Time in Result files
  #1
Erich
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Hello,

Is there a way to edit time in result files such that you can copy a period and add it to the previous? In effect taking a series of timesteps and doubling its total time. This would be done for a transient pressure loading within Ansys Structural.

Thanks,

Erich
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Old   May 11, 2007, 11:33
Default Re: Editing Time in Result files
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Robin
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Hi Erich,

Good question. You can do this using the CEL int() and nint() functions to find the integer and non-integer parts of a number respectively.

Create a variable, say 'period', equal to the time interval of the period and replace 't' in your expression with 'tPeriod', which can be defined as follows:

tPeriod = nint(t/period)*period # Time of current period nPeriods = int(t/period) # Number of periods that have passed

Similarly, you could write:

tPeriod = t - int(t/period)*period

Both should give you the same result. Note that you can also use this to non-dimensionalize the period. If you wanted to change the period, just multiply the first expression by the 'newPeriod', which you would set to the new value for your period. This will give you the same profile over a different period of time.

Regards, Robin
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Old   May 11, 2007, 12:01
Default Re: Editing Time in Result files
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Robin
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Hi Erich,

I didn't pay close attention to your original question. What I describe above can be applied to repeating transient profiles in CFX. I'm not sure about how your would do this to apply a transient profile to ANSYS.

Regards, Robin
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Old   May 11, 2007, 14:02
Default Re: Editing Time in Result files
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Erich
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Hello Robin,

Thanks for the effort, I thought you might be the one to respond.

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Old   May 14, 2007, 20:16
Default Re: Editing Time in Result files
  #5
Omer
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I guess you already got what you were looking for. But if you are running a transient analysis in ANSYS structure by applying pressure from CFX as loadsteps, with a uncoupled approach. You can choose to specify any time for each of these loadsteps. Hence giving you a lot of flexibility.
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Old   May 15, 2007, 17:17
Default Re: Editing Time in Result files
  #6
Erich
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Hello Omer,

How would I specify a time step for each loadstep? When I import the CFX solution file I must pick a time step from the result file. Is there a way to pick a time step value from your result file and redefine what time Ansys Workbench uses for that pressure?

Thanks for your input.

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Old   May 15, 2007, 21:51
Default Re: Editing Time in Result files
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Omer
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Well, we can define loadsteps with our own timesteps in our basic ANSYS structural package. But doing it with Workbench is a whole different question. And I would myself appreciate if someone would throw some light around on doing the transient structural problem in Workbench 10's Simulation.
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