hi

You can write UMAT as usual and call the utility subroutine UVARM (within the UMAT subroutine) where you need that material property

So, for calling another subroutine from UMAT, should we have to use this command:

CALL UVARM(......)

?

yes

keep in mind that you have to define the parameters.

Check the Abaqus documentation ( Abaqus User Subroutines Reference Guide)

Sir, I want to update my user defined material like density, then how I have to define it?

To visualization of the updated user defined variable, how to write code for that.

Sir, i am attaching my fortran file. Can you please help to rectify the errors in the code.

1. providing young modulus and density as user defined

2. calculate change in density wrt time

3. update density

4. visualization of updated density.

Thank you so much for helping...

describe your complete problem and send .inp and .f file. I will check and see where is the mistake

My problem now i am facing is while adding .for (fortran file) in job, it's showing an error, "Problem during compilation - C:\Temp\OUR_SED.for"

My aim is too get updated density in my problem. For that, I have change in density function wrt time. My young modulus also depend on density. So when density change my young modulus also should change.

I am calculating SED also. As it is one of the variable needed for our solution.

I edited my code to USDFLD.

Attaching the .inp file and .for file and log file also

Thank you so much

From your subroutine file it is clear that you are new to FORTRAN coding.

Your subroutine needs a lot of modification.

P.S. I will prefer that discussion by inbox.

Hello,

Did you get to resolve this problem finally?

I have the same problem rigth now and I would like to know how you did it.

Thank you veru much.

Regards.

hello Garcia

what exactly you want to simulate?

do you want to update your material properties after some increment?

Hello,

Yes, I am doing a code in FORTRAN, where first I use UMAT for implementing the stiffness matrix and the failure criteria (in my case Puck) to simulate the onset failure in 3D elements. I use the STATEV variables for the failure factors.

And I would like to develop one code to show the outputs from UMAT in abaqus where I can plot each strains and stresses in each element of my model.

Thank you very much.

Regards

Hello

If you only want the contour plot or plot on a particular integration point you can do that in Abaqus view point. No code is required for that.

You can also write a text file for that simply add some line to your subroutine file. After that, use any plotting tool like origin or tech plot to get your required plots.