Issues Using the Mohr Coulomb with Strain Softening (MCSS) Model in ANURA3D

[GBarbosaS]

Hello, I’m facing difficulties using the Mohr Coulomb with Strain Softening (MCSS) model in ANURA3D. I successfully compiled the program with the MCSS model in both the 2022 and 2024 versions (using a file provided by a friend), but I encountered errors in the command prompt.

Issues Encountered:
Error in 2D Simulation:
During a 2D simulation, I encountered an error related to indexing:

Error in 3D Simulation:
To troubleshoot, I attempted to run the simulation in 3D, but received another error:

I also tried using the files available at this link:
Anura3D_Moore - VelCorrection Branch
The compilation was successful with these files, but I’m unsure if I used the correct model name or if I made a mistake in Visual Studio.

Even when successfully compiling with the model from the link above, the MCSS model name was not recognized in the .GOM file. I tried several different names, but none worked. (It’s possible I placed the call incorrectly in the code, though I followed the hardcoding manual closely.) However, native models worked perfectly.

Question:
Has anyone faced similar issues with the MCSS model in ANURA3D? Could there be a critical issue in the .GOM file or the code that I might be missing? Any help in identifying the problem would be greatly appreciated!

[18052121369]

@GBarbosaS
hello,GBarbosaS, I also try to compiled the program with the MCSS model in both the 2022 version or 2024 version, but I met some
questions. CCan you tell me how you compiled successfully ? Or can you share these files ? Perhaps we can solve some problems in the application of MCSS constitutive model together. Here is my email :wkf18052121369@163.com. I will look forward to your reply very much.

[GBarbosaS]

@18052121369 I'll explain what I have done so far. I managed to compile the MCSS file in the 2024 version, which is located in this Google Drive folder:
:https://drive.google.com/drive/folders/1K85OtC75zuikmrF1Rhp3UTP6-auKGQ9o?usp=sharing
The file I am referring to is Velcorrection. I took the model and placed it into the 2024 version, slightly modifying the files described in the following manual:https://github.com/WaveHello/Anura3D-Info/blob/main/Anura3D_HelpGuides/Hard_Coding_ESM_Guide.md.

I made the calls as follows: his shows where I included the model file, the modification in MPMConvPhase, the model call, the changes in ReadMaterialData.for, and the modifications in ExternalSoilModel.for).





Even so, the program didn’t work with the model, presenting the following error:
Forrtl: severe (157): Program Exception - Access Violation.
I obtained a GID file from a colleague (available in the above drive folder), where I replaced the executable, and the program started running with MCSS. However, it seems unstable and generates errors over time. The test file I used runs each step in 30 seconds with the conventional MohrCoulomb model, but with MCSS, each step took 3 hours and 15 minutes. It eventually presented an error after a few steps, as shown in the following image:

[GBarbosaS]

Now I am trying to compile the NAMC Model, but I haven’t succeeded yet.

[18052121369]

@GBarbosaS
Thank you very much for your reply, which is very helpful to me, I will try according to your reply, sincerely thank you