×
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

Over-constrained assembly issues

Over-constrained assembly issues

Over-constrained assembly issues

(OP)
Hi,

I've been doing some sample work with Catia Assembly, and am getting the issue "Ignored constraint: the system of constraints is inconsistent or over-constrained". It occurs when I try to attach two cylinders at their tips with contact, and align them with coincident. I can do either individually, but when I try to do both it gives me the error. Any help would be appreciated. I'm new to both the forum and Catia.

I'm trying to attach that orange section coincident and butt-end against the clear part (it's a pen). The first two constraints are connecting the orange and blue parts and are working fine. They're not affecting the orange-clear constraints.



Thanks

RE: Over-constrained assembly issues

Try a different constraint like distance constraint.

RE: Over-constrained assembly issues

(OP)
I tried that, it didn't work either

RE: Over-constrained assembly issues

can you check if the face and the axis of the part you select are normal on each part?

Eric N.
indocti discant et ament meminisse periti

RE: Over-constrained assembly issues

I would make Coincidence.14 between the centerline of the orange or blue part and the centerline of the clear housing. (a point-to-point coincidence creates a redundancy with the face-to-face contact)

I would also add a Fix constraint to one of your parts, probably the clear housing.

RE: Over-constrained assembly issues

(OP)
The faces are normal, and the coincidence is between centerlines. Still not sure the issue. Thanks for your help though

RE: Over-constrained assembly issues

I am almost sure, there is an issue with your geometry. I experienced similar cases hundred of times and problem was always on my side and my wrong assumptions (something which appeared to be perpendicular or parallel, was not ...).

Tesak
http://scripts4all.eu/txtoncurve/ - Text along a curve for Catia V5

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