×
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/Explicit - Incorrect displacement

Abaqus/Explicit - Incorrect displacement

Abaqus/Explicit - Incorrect displacement

(OP)
Hello guys,

I hope you can help me. I have been struggling with this problem for a while...

I am conducting a UOE pipe forming analysis using Abaqus/Explicit.

The forming tools are modeled as analytical rigid surfaces. The problem is that even using a smooth amplitude step and applying the boundary conditions to the reference nodes of the rigid body, when I analyze the results the movement of the rigid body is different from the one I imposed in the boundary conditions, for example, if a apply a displacement U2 = -600, the real displacement is U2 = -584. It is very strange and I can't find an explanation for this problem.

There are even cases that a apply displacement conditions in two DOF, for example U1 and U2, and the rigid body only moves in U2.

I am assigning reference points and applying the boundary conditions to the reference points so I do not know where I may be failing.

During every attempt I get a warning message like this:
The option *boundary,type=displacement has been used; check status file between steps for warnings on any jumps prescribed across the steps in displacement values of translational dof. For rotational dof make sure that there are no such jumps. All jumps in displacements across steps are ignored

I feel like this is the problem but I am not sure how to solve it.

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