×
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

Meshing: How to force seeded edges?
2

Meshing: How to force seeded edges?

Meshing: How to force seeded edges?

(OP)
Hi,

I'm trying to mesh a cylinder in Abaqus 6.14, where (1.) one half should have a finer mesh than the other half and (2.) the outside should have a different mesh than the inside. I created two partitions for that: (1.) I split the part in half and (2.) I create an inner cylinder partition. That yields the two following problems:

1. When I seed the circular edge on one side, it automatically seeds the same edge on the other side of the cylinder with the same size.
2. The seed on the inner cylinder is ignored and fitted to match the elements of the outer cylinder.

It pretty much comes down to the questions
1. How can I independently mesh each edge?
and
2. How can I force Abaqus to stick to the dimensions of the seed?

Thanks so very much for your help!

RE: Meshing: How to force seeded edges?

Try

Mesh -> Controls -> Sweep

RE: Meshing: How to force seeded edges?

(OP)
Thanks very much. I've been playing around with the Sweep function. To my understanding, this function is more used to reach the mesh I demonstrated above, rather than the one I anticipate? Maybe I'm wrong, would you mind clarifying how you would proceed exactly -- or what settings you would use?
The most obvious problem in the image is, that the seed on the intermediate radius is validated. I want this kind of random-looking mesh of the inner cylinder also on the outer cylinder; which would enforce to stick to the seeds.

RE: Meshing: How to force seeded edges?

What you want is only possible with two independent meshes. One edge or one surface can only follow one seed.

RE: Meshing: How to force seeded edges?

(OP)
I think I wasn't fully clear. When you look at my image, I only have one seed on the smaller, inner diameter/edge. However, the mesh doesn't stick to this seed, as it sweeps the mesh from the outside to the inside. The element size is much smaller than the seed size. I don't need that regularity, I rather have it stick to the seed.

RE: Meshing: How to force seeded edges?

In 6.14 you have options in the Local Seed dialog to add constraints.
Before 6.14 it was a button below the viewport when creating local seeds.

RE: Meshing: How to force seeded edges?

Hi,
In the dialogue box where you choose if the mesh shall be tet, hex dominated or hex there are options for the hex:
1. structured
2. sweep
3. maybe-some-other option

If you select option 2 (sweep), you can change it to advancing front (I guess that is what you want).

Let me know if I answered your question (or not). :S

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