×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

transfer variables: ABAQUS -> UMAT
2

transfer variables: ABAQUS -> UMAT

transfer variables: ABAQUS -> UMAT

(OP)
Hello all togehter,

I have a problem with the user subroutine UMAT. I hope somebody is to be able to help me.

How can I transfer current variables from ABAQUS to the user subroutine which are not listed in the interface?

For example, the strain and the stress will be updated before every increment in the subroutine.
How can I call e.g. the saturation or something else?

Thank you very much.

RE: transfer variables: ABAQUS -> UMAT

A workaround may be to use the solution-dependent state variables (STATEV). Using the subroutine USDFLD, set the state variable(s) equal to the required existing variable(s) then make use of it(them) in the UMAT.

RE: transfer variables: ABAQUS -> UMAT

Though your problem formulation lacks some details, in addition to  what mrgoldthorpe suggested, you could use COMMON blocks, and/or external files. I use COMMON blocks to share information among various ABAQUS subroutines.

RE: transfer variables: ABAQUS -> UMAT

(OP)
Thank you for the helpful tips!
I´ve got also another tip, to do this with the subroutine URDFIL.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources