×
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

Same distance with large displacements

Same distance with large displacements

Same distance with large displacements

(OP)
Hi,
This is my entry to this forum, but it has already helped me on a number of occasions.

I need to couple radial displacements of a number of nodes arranged in a circle on a plane. During the simulation this plane has to be tilted whilst the nodes on the surface are allowed to move in radial direction with the same displacement.
The surface can be tilted using kinematic coupling, however, all nodes will then have a different radial displacement.
With *equation I can force the nodes to have the same radial displacement, but I can no longer tilt the surface (coordinate systems are not co-rotational).

Previously I didn't tilt the surface and used *equation in combination with *transform (using cylindrical coordinates), however, now the plane containing the nodes needs to be tilted.
Because the coordinate systems are not co-rotational I cannot use *equation anymore.

Attached is an example input file to illustrate the problem:


Kinematic coupling and connector elements are co-rotational, but I don't see any way I could use them to enforce the condition that all nodes have the same radial displacement.

I have tried a lot, this is the very first time I really think something is impossible in Abaqus.
Has anybody an idea?

Thank you in advance!

Kind regards
Max

RE: Same distance with large displacements

The example for kinematic coupling (Section 35.2.3 of the Analysis User's Guide) cover this exact use case.

RE: Same distance with large displacements

Bah, I should've read more closely. Can you use a combination of kinematic rotation and equation to make this work?

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