Stress and strain with Concrete damage plasticity

[Ezine]

How to view the distribution of stress and strain in Abaqus? Knowing I have used Concrete Damaged Plasticity (CDP) model. How we can demarcated the fracture zone process?
Thank you

 

[FEA way]

Apart from standard output variables available in Abaqus (stress tensor components, Mises stress, various strain measures) there are some outputs specific to CDP model. Among them you can find PEEQ and PEEQT which are compressive and tensile equivalent plastic strain, respectively. You can also plot compressive and tensile damage variable (DAMAGEC and DAMAGET).

To visualize the crack directions you can use symbol plot of maximum principal strain.

 

[Ezine]

Thank you FEA way.
I did not formulate my question well. I'm looking to locate what is called fracture process zone (FPZ) is the ductility of concrete. I need to know the distribution of the stress with the displacement opening. Regarding the last sentence I did not understand what you mean. I mean To visualize the crack directions you can use symbol plot of maximum principal strain.
I have another question how to hide the model when I used DAMAGET it shows me two models cracked model with not cracked at the same time on ABAQUS.
Again thank you

 

[FEA way]

You should be able to locate this fracture process zone using PEEQ variable. But you may have to adjust the contour plot limits.

This method with symbol plot of max principal stress can be used to visualize cracking patterns in concrete. For details check Abaqus documentation (chapter "Concrete damaged plasticity", paragraph "Visualization of crack directions").

Can you attach a picture showing the problem with DAMAGET variable ? Maybe you accidentally enabled overlay plot.

 

[Ezine]

I sent it.
Thank you

 

[Ezine]

You have received the picture.
Thank you

 

[FEA way]

I can't see any attachment in your post. Please try uploading it again.

 

[Ezine]

How to upload.

 

[Ezine]

Can you see the attached file.
Thank you

 

[FEA way]

You can attach picture to reply, no need to create a new thread.

This image looks really strange. It shows something like overlaid and/or highly deformed contour plot. You should reopen the odb file and create undeformed shape contour plot with visible mesh.

 

[Ezine]

Thank you. I tried but it doesn't work. It remains the two shapes.
Thank you again

 

[Ezine]

I found where the problem is. I have deleted the old part in Assembly-instances. I forgot to delet it before Rolling Abaqus. I rolled Abaqus and it works. I wanted to share with you the solution.
Thank you a lot