×
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

Abaqus or Ansys

Abaqus or Ansys

Abaqus or Ansys

(OP)
I have to implement a new constitutive relation in a commercial FE code. Can somebody help me with the tips: which of them (Abaqur or Ansys) is better and easier for programing?

RE: Abaqus or Ansys

You can code the constitutive response in ABAQUS using Fortran subroutines (namely the UMAT subroutine, which is described in the ABAQUS documentation).

RE: Abaqus or Ansys

You can also code constitutive relationships in more than one stress-strain metric (Euler, Lagrange, etc.) in ADINA, also in Fortran I think. 10 years ago that was my doctoral project--nonlinear viscoelastic constitutive equations, and I used ADINA.

RE: Abaqus or Ansys

Hi,
every hi-end FE program will allow you to do so. It is possible also in Ansys (I mention it only because it wasn't named by the previous posters). I'd suggest to choose the hi-end FE system for which YOU are more familiar with.

Regards

RE: Abaqus or Ansys

(OP)
Thank you very much for your hints. I am more familiar with ANSYS but I have used it just for modeling not for programing. As I have  understood well for both of them I have to use Fortran? The theory that has to be programed is already difficult so I want to make a good choice for the program to avoid additional problems.

RE: Abaqus or Ansys

You may consider calling external programs from your FEA code (mathcad, etc).

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