Error message by the analysis

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mazen
Posts: 4
Joined: Sat Jun 01, 2024 12:12 pm

Error message by the analysis

Post by mazen » Tue Jun 18, 2024 2:21 pm

Dear STKO Team,

I am trying to analyze this model related to this Youtube video.
[https://www.youtube.com/watch?v=vPB9ZwT ... 7qTOJL94rv ]
& I got this error in the photo.
Can you please explain to me why i get this message.
Thank you very much for the support!!

Best regards,
Mazen
Attachments
Error massage.jpg
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0002_shear_wall_3d.rar
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kesavapraba
Posts: 348
Joined: Sat Mar 28, 2020 2:25 pm

Re: Error message by the analysis

Post by kesavapraba » Thu Jun 20, 2024 1:35 pm

Hi, One of the reasons for the error is overly coarse mesh in your model. If you look the following research article (pg.11, Eq.30) on DamageTC3D model, there is condition to check the snap-back behaviour of the constitutive model, which is:
l_dis < 2Gc/(sigma_p x epsilon_p)
l_dis is calculated from the mesh size (min edge size in quad element). So, there will an error if the condition is violated. I reduced the global mesh size to 100 in your model, it now works fine. Attached is the modified model.

Research article:
Petracca, Massimo, Luca Pelà, Riccardo Rossi, Stefano Zaghi, Guido Camata, and Enrico Spacone. "Micro-scale continuous and discrete numerical models for nonlinear analysis of masonry shear walls." Construction and Building Materials 149 (2017): 296-314.
Attachments
0002_shear_wall_3d.zip
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:: With best wishes ::
Prabakaran Kesavan

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