Analysis error

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Dear STKO team:
How to deal with the error about "unable to open the file"

2022-05-28_151423.jpg (146.79 KiB) Viewed 3881 times

? This is the model file

2000-3000.zip

(188.67 KiB) Downloaded 219 times

.
Wait for your reply.

[vokumus]

You have asterisk (*) character on your result file name. Windows does not support that so OpenSees fails to create the result file.

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Thank you for your reply.

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The modified model is not convergency

2022-05-29_094852.jpg (125.69 KiB) Viewed 3865 times

, although I follow the successful example of shear wall.Can you let it running successfully? This is the modifiled model

2000-3000.zip

(188.53 KiB) Downloaded 223 times

. Wait for your reply.

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I rebuild and simply the model, but it does not run successfully.

2000-3000-rebuild.zip

(159.1 KiB) Downloaded 218 times

[STKO Team]

There were some mistakes with the material parameters.
More specifically in the hysteretic material the pinching coefficients were not physical... you can use the material tester to have a look.

here's a working file. Look at the material parameters for both steel and concrete to see the differences

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Thank you for your reply.
The pinching coefficients of hysteretic material in my model of parameter analysis is based on the model valatied by test.
This is the model valatied by the test and result is good compared with test data

Test.zip

(180.25 KiB) Downloaded 199 times

. The model can run successfully. And I should ganrantee the pinching coefficients are same in both models (parameter analysis and test).
And I do not understand the model convergency is related to the pinching coefficients.
Wait for your reply.

[STKO Team]

I'm not saying the convergence issue is related to those parameters. I just noticed that you assigned strange pinching coefficients for a steel rebars. Are you sure the rebars have this huge pinching?

steel_1.png (104.87 KiB) Viewed 3828 times

I also changed the plastic damage factors, typically concrete shows more plastic strains in compression.

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Thank you for your reminding. I’m sure it, because the rebar replace the steel plate in the test, the steel plate has the huge pinching due to the huge deformation.

[STKO Team]

Ok