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


Material orientation

Material orientation

Material orientation


I have a question about the material orientation of (solid) elements.

When I use the command Modify - Update Elements - Material Orientation, I get the following error messages:

I do not understand how the material orientation could be perpendicular to a solid element.

I try to use the material orientation to make sure my output stress in in the correct direction. (I also want to use this method in other plate element models)

My model consists of hexahedral- and tetrahedral meshed elements. Here are some pictures:

Thank you in advance for your help!

RE: Material orientation


Are you certain thst there are no plane elements in the model? Prerhaps some have been created during the meshing?



RE: Material orientation

Thank you! There were indeed some Plot planar elements in my model (I extruded these elements to create the solid mesh).

Now it seems that that I can define a material orientation for planar elements only:

Which I find quite interesting: if I cannot define a material orientation for solid elements, why can I transform the output for solids to a material orientation? see image below.

RE: Material orientation

You are mixing 2 things:
- the "Modify > Element > Material" command deals with elements which can be oriented at component level (i.e. at element level), so in the element NASTRAN card.
- solids are orientable through their property, not through the CHEXA card.

So you need to use Modify > Edit the solid property > checkout the "Material Axes": you need a CSys to orient solid elements.


RE: Material orientation

Thank you! I did not notice the "material axes" section in the property window.

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!


White Paper – Your Construction ERP RFP Checklist
Selecting business software for a medium to enterprise-sized construction concern is extremely challenging in large part because most enterprise resource planning (ERP) suites originated in the world of repetitive manufacturing and are therefore a poor fit for a project and asset-centric business. However, midsize to large contractors need the predictable, auditable processes that ERP delivers. Download Now

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