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whj

How to set the moment center in acusolve

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If you issue the command:     acuTrans  -h      you'll see one of the options is  -mc  for moment_center:

 

acuTrans -h | grep center
acuTrans:   -mc <str>     center about which moment is computed
acuTrans:                   moment_center= 0,0,0 [default]

 

If you're using Linux, you can add    -mc  0.0,2.5,-2.3   to the acuTrans command directly.  If you're using Windows, you'll need to add the option to your local Acusim.cnf file - as the Windows parser typically doesn't work well with the commas.  (This also works for Linux if you don't want to type it as part of the acuTrans command.)  For example, in the Acusim.cnf file add:

 

moment_center  =  0.0,2.5,-2.3

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20 hours ago, acupro said:

If you issue the command:     acuTrans  -h      you'll see one of the options is  -mc  for moment_center:

 

acuTrans -h | grep center
acuTrans:   -mc <str>     center about which moment is computed
acuTrans:                   moment_center= 0,0,0 [default]

 

If you're using Linux, you can add    -mc  0.0,2.5,-2.3   to the acuTrans command directly.  If you're using Windows, you'll need to add the option to your local Acusim.cnf file - as the Windows parser typically doesn't work well with the commas.  (This also works for Linux if you don't want to type it as part of the acuTrans command.)  For example, in the Acusim.cnf file add:

 

moment_center  =  0.0,2.5,-2.3

Thank you for your help.
Because I calculate three separate objects. I need to set three moment centers to solve their moment separately.
How should I set this up? Can it be set directly in the software interface?

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You probably need to remove the space after the commas - and maybe add a space after the = (but that is likely not necessary).  Yes, you'll need to use a different value for each component.  You can add all three, then just comment those you don't need at the particular time by placing # in front of that line.

 

In the acuTrans command, you can specify which surface set you want to query.  Example:

 

acuTrans  -osi  -osis  Fan1  -osiv  moment

 

See  acuTrans -h  for complete usage and/or review the Programs Reference Manual, acuTrans section

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