×
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

Ansys: how to mesh 3D surface body with Shell elements

Ansys: how to mesh 3D surface body with Shell elements

Ansys: how to mesh 3D surface body with Shell elements

(OP)
Hi there,

I am used to creating models with a script and run them. Now I am starting to use Workbench as the model design get more complicated.

I created a 3D surface body and got the simulation working. Great.

However, to save computational time, I want to have shell elements instead of 3D elements. Ansys documentation indicates Surface Bodies will be meshed with Shell elements. It does not do so for me. It is meshed with 3D elements with the provided thickness.

Any thoughts on how to force the mesher to merely use shell elements? Or is the mesher using 3D elements because, even though I have a surface body, it still does not fulfill (for me unknown) requirements for the mesher to mesh with shell elements?

Any thoughts on this?

Thanks!

RE: Ansys: how to mesh 3D surface body with Shell elements

hi there,

I'll just repeat what I wrote for you already on ansysforum.com.

Workbench is truly generating shell elements for you. The thickness parameter is necessary for shell elements and cannot be zero, otherwise the stiffness of such body is 0. What you are seeing as 3D elements is the function of showing thickness. You can turn it off in View->Thick Shells and Beams.

If you intent to use the shell as a boundary and you're gonna make it all rigid somehow, you still need that thickness attribute >0. It won't affect anything.

Good luck!

Pavel

RE: Ansys: how to mesh 3D surface body with Shell elements

Not sure what you mean by "surface body". If you import a solid model from CAD or a STEP file, Workbench will mesh it with solid elements. If you want shell elements, you either need to bring in a model with surfaces, or first take your solid model into Design Medeler and make a mid-plane model. WB will mesh surfaces with shells and solids with bricks

Rick Fischer
Principal Engineer
Argonne National Laboratory

RE: Ansys: how to mesh 3D surface body with Shell elements

(OP)
Dear Pavel,

Thanks a lot. It was as simple as that! Learning every day to deal with the GUI...

Regards,
Marco

RE: Ansys: how to mesh 3D surface body with Shell elements

You're welcome Marco!

The Workbench Mechanical GUI is quite alright. It just takes some experimenting and trials. You can always export your FEM data via Tools->Write Input File and check what WB does in the background by reading the file in MAPDL. Especially for things like contacts, many settings are "program controlled" and unless you want to dive in the documentation, checking the FEM in Classic is faster alternative.

Regards,
Pavel

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


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close