×
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

mesh generation failed! imprecise vertices? Help needed (pics attached)

mesh generation failed! imprecise vertices? Help needed (pics attached)

mesh generation failed! imprecise vertices? Help needed (pics attached)

(OP)
Hello ,
I am trying to hex mesh a foam part as shown. When i try to mesh i get the mesh generation failed due to a problem in the propagation of mesh seeds error. I go to query- geometry diagonistics and find two imprecises vertices. Are they causing this problem? How to fix this?
Thanks!

RE: mesh generation failed! imprecise vertices? Help needed (pics attached)

Can you try to use virtual topology to ignore the problematic vertices?

RE: mesh generation failed! imprecise vertices? Help needed (pics attached)

There are various ways of fixing geometry in the part module by merging edges, stitching, removing redundant entities etc. Try this first. If you use virtual geometry then you'll be restricted to using tet elements which shouldn't be necessary.

RE: mesh generation failed! imprecise vertices? Help needed (pics attached)

@corus - virtual topology doesn't restrict you to tets.

I've used it to remove redundant vertices from parts which I then hex meshed. Here's the blurb from the users guide:

Abaqus/CAE does not support all of the meshing techniques on regions that contain virtual topology. Specifically, Abaqus/CAE does not support the following:
  • Two-dimensional free meshing with quadrilateral or quadrilateral-dominated elements using the medial axis algorithm.
  • Three-dimensional swept meshing using the medial axis algorithm.
  • Two-dimensional structured meshing if the region to be meshed is not bounded by four corners.
  • Three-dimensional structured meshing if the region to be meshed is not bounded by six sides.

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