OpenSeesPY stressStrain recording issue

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ucssd
Posts: 2
Joined: Mon Mar 21, 2022 1:54 am

OpenSeesPY stressStrain recording issue

Post by ucssd »

Hi all,

I have a structural model that has been working and recording perfectly for a long time. However, after changing my laptop and installing OpenSeesPY, I realized that stressStrain recorders are not working. Below was the working script;

recorder('Element', '-file', ('UnconfConc' + str(i) + '.out'), '-time', '-ele', *[int(1)], 'section', str(i), 'fiber', str(z1), str(y1), str(int(unconfConc)), 'stressStrain')

But this is not working anymore except providing the time steps. I also tried defining section number and fiber locations as integers but it didn't work either. If you may help me with the correct syntax to record stressStrain, it would be profoundly appreciated.

Best regards
mhscott
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Re: OpenSeesPY stressStrain recording issue

Post by mhscott »

If you are using the latest OpenSeesPy, version 3.4.0, you can drop all the str() stuff.
ucssd
Posts: 2
Joined: Mon Mar 21, 2022 1:54 am

Re: OpenSeesPY stressStrain recording issue

Post by ucssd »

Thank you for the reply, but it is still not working. I have tried the below script.

recorder('Element', '-file', ('Try.out'), '-time', '-ele', *[1], 'section', 1, 'fiber', 0.0, 0.0, 'stressStrain')

And I again obtained a time column only. Can you provide an example that can work after the latest updates? I have tried the scripts in other posts as well but could not obtain results.

Best regards
pkakoty
Posts: 2
Joined: Mon Jul 18, 2022 4:07 pm

Re: OpenSeesPY stressStrain recording issue

Post by pkakoty »

I am facing a similar issue with openseespy version 3.3.0.1.1. Is there any updates on recording stress-strain of specific fibers in an element?
mhscott
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Re: OpenSeesPY stressStrain recording issue

Post by mhscott »

Update to the newest version, 3.4.0.1
YZHeng
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Joined: Wed Jul 20, 2022 7:14 pm

Re: OpenSeesPY stressStrain recording issue

Post by YZHeng »

thanks
wusw
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Joined: Fri Jul 22, 2022 12:43 am

Re: OpenSeesPY stressStrain recording issue

Post by wusw »

mhscott wrote: Tue Jul 19, 2022 5:43 am Update to the newest version, 3.4.0.1
I have updated to version 3.4.0.2,but still have this issue
here is my code: recorder('Element','-xml','rebar_strain.out','-time','-ele',1,'section',1,'fiber', -330,0,6,'stressStrain')
it can only record '-time'
mhscott
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Location: Corvallis, Oregon USA
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Re: OpenSeesPY stressStrain recording issue

Post by mhscott »

Try using '-file' instead of '-xml'
wusw
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Joined: Fri Jul 22, 2022 12:43 am

Re: OpenSeesPY stressStrain recording issue

Post by wusw »

thank you for your reply,
I have tried: recorder('Element','-file','rebar_strain.out','-time','-ele',1,'section',1,'fiber', -330,0,6,'stressStrain')
but it have the same issue
mhscott
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Re: OpenSeesPY stressStrain recording issue

Post by mhscott »

1. Which element are you using?
2. Which material type (Elastic, Steel01, Concrete02, etc.) are you trying to record via fiber stress-strain?
3. Is there a wrapper around the material, like InitStress or Fracture?
wusw
Posts: 6
Joined: Fri Jul 22, 2022 12:43 am

Re: OpenSeesPY stressStrain recording issue

Post by wusw »

thanks for your reply!
1. I have tried both the dispBeamColumn and forceBeamColumn element
2. the material types are Steel02 and Concrete01
3. it is just a simple material without any wrapper
mhscott
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Re: OpenSeesPY stressStrain recording issue

Post by mhscott »

Oh, I see. Why are you specifying three numbers after 'fiber'? You have -330, 0, 6
wusw
Posts: 6
Joined: Fri Jul 22, 2022 12:43 am

Re: OpenSeesPY stressStrain recording issue

Post by wusw »

6 is the material tag, I tried '-330,0' but it didn't work either. :(
mhscott
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Re: OpenSeesPY stressStrain recording issue

Post by mhscott »

What type of material is material tag 6?
wusw
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Re: OpenSeesPY stressStrain recording issue

Post by wusw »

it's steel02
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