Static Analysis - Weighted Compliance

arh423

Hey,

 

how can I output weighted compliance in static analysis?

Did I need to activate it in control cards or something? Can't find it.

 

Thank you!

Adriano A. Koga

Hi,

 

Weighted compliance is an optimization output only.

You can build a 'dummy' optimization, and force zero iterations to calculate it, under opti controls. Then the weighted compliance will be computed.

 

Another option is taking the values and go to excel to calculate it.

arh423

Hey,

 

thank you!

Which value for exel do you mean?

 

Thank you!

arh423

Found this in .out-file without chaniging anything:

 Subcase   Compliance     Epsilon
       1  6.481120E+02 -2.015214E-10
       2  5.686093E+02 -5.914374E-10
       3  6.476533E+02 -1.777104E-10
       4  5.686258E+02 -6.589830E-10

 

Can I just sum up to get weigthed compliance here?

Adriano A. Koga

i should have een more specific. Yes, taking the compliance values from the .out file was my suggestion.

 

WCOMP is just

 

WCOMP = sum(wi * Ci), with i=1...number_loadcases

 

If your weighting factors are all 1.0, then just sum all the compliances. Otherwise, multiply by its weighting factor and sum-up.

arh423

Thank you!

Is the Compliance in Nmm?

Adriano A. Koga

yes. Compliance has units of Force*displacement.