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Topics - STOKLJOS

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Uncertainty Quantification (quoFEM) / QUOFEM offline?
« on: May 23, 2022, 05:38:58 PM »
Hello,

I was trying to run the quofem desktop application this weekend but everytime I submitted a job it says status is blocked. Is the application currently offline? If so when is it expected to come back online?

Thanks,

Josh S.

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Uncertainty Quantification (quoFEM) / QuoFem Parameter Estimation
« on: January 06, 2022, 11:23:03 PM »
Hello,

I have been using the parameter estimation for an opensees model and it seems to not yielding the best results. For instance look at the output of the dakotaTab.out; the parameters are varying by 1e-4 and the best parameter picked is 30 kips over the experimental value. I am currently using a convergence tolerance of 0.0001 and max iterations of 1000. The parameters also have a healthy lower and higher bounds on them (ie stc has lower of 0.01 and higher of 1).

 I am wondering why the simulation is yielding results after 7 evaluations and not varying the parameters more to hopefully converge to a closer result.

Thanks,

Josh




%eval_id  interface stc                srs            shr                  MaxStrength   
1        NO_ID     0.3                   0.33           1                     -159.9473689   
2        NO_ID     0.3001011366   0.33           1.000231482    30.27846112   
3        NO_ID     0.3001254848   0.33           1.000312594    -158.1980189   
4        NO_ID     0.3001035714   0.33           1.000239593    -153.3980689   
5        NO_ID     0.3001013801   0.33           1.000232293    -159.5161689   
6        NO_ID     0.300101161    0.33           1.000231563    -155.7201689   
7        NO_ID     0.3001011391   0.33           1.00023149     -157.0393689

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