×
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 ETABLE command

Ansys ETABLE command

Ansys ETABLE command

(OP)
Hi,

Let's see if someone can help me with this issue.

When working with ETABLE command (ETABLE, Lab, Item, Comp, Option) in Ansys, the program stores averaged element centroid value of the specified item component (by default). The question is, if you are working with shell elements, which layer is being considered for obtaining the average value: Top, middle of bottom?

Thanks in advance.

Regards,

Daniel

RE: Ansys ETABLE command

Irrespective of other settings, SHELL181 provides stress and strain output at the center of the layer. That means at middle layer.

Link

If you want to access top or bottom results, use SHELL command.

RE: Ansys ETABLE command

(OP)
Thanks for the response.

The fact is that, I though as you, but when I made a comparation between the results obtained with ETABLE command (implemented in a Design Assessment module) and the same results obtained in the "normal" enviroment by means of direct result plot with the option "elemental mean" selected, the results do not match.

In fact, they only match if I select Top layer in the direct result option. That's the reasson why I am asking myself what is stored when ETABLE command is implemented, since its results are the same than the ones obtained when plotting directly results --> VM Stress --> "Elemental mean" --> "Top layer"

Any idea? Again, thanks for your support

RE: Ansys ETABLE command

I should have looked in post processor section for explanation and yes by default results are stored for top layer.

Check this link.

Shell elements or layered shell elements: By default, results for shell or layered elements are assumed to be at the top surface of the shell or layer. To display results at the top, middle or bottom surface, use the SHELL command

RE: Ansys ETABLE command

You dont even need the shell command. Just type top, mid, or bot to change the location for post processing.

Rick Fischer
Principal Engineer
Argonne National Laboratory

RE: Ansys ETABLE command

(OP)
Thanks guys, it was really helpfull.

The fact is that I am getting the usefull data by means of a ETABLE command and then, postprocessing it and, at this moment, I don't know how to select top, mid or bot results in ETABLE command.

RE: Ansys ETABLE command

Insert a command shell, top or shell, mid or just top or bottom as Mr Rick said, just before the ETABLE command.

RE: Ansys ETABLE command

(OP)
Thanks, I will try your suggestion.
It was a phyton code for Design Assessment (DA). I don't know if just inserting a command before writing ETABLE will work... but I will make some probes this weekend.
Part of the code:

macfile = open(DesignAssessment.Helper.ResultPath+"\\runda1.inp", "w")
macfile.write("/batch\n")
macfile.write("/post1\n")
macfile.write("file,"+rstFname+"\n")
macfile.write("set,last\n")
macfile.write("*get,emx,elem,,num,max\n")
macfile.write("*dim,evls,,emx,10\n")
macfile.write("etable,esx,s,x\n")
macfile.write("etable,esy,s,y\n")
macfile.write("etable,esz,s,z\n")
macfile.write("etable,esxy,s,xy\n")
macfile.write("etable,esyz,s,yz\n")
macfile.write("etable,esxz,s,xz\n")
macfile.write("etable,es1,s,1\n")
macfile.write("etable,es2,s,2\n")
macfile.write("etable,es3,s,3\n")
macfile.write("etable,eseqv,s,eqv,AVG\n")
macfile.write("*vget,evls(1, 1),elem,1,etab, esx\n")
macfile.write("*vget,evls(1, 2),elem,1,etab, esy\n")

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! Already a Member? Login


Resources

Research Report - What’s the State of Nonlinear Simulation?
Simulation is an increasingly valuable tool across the product design workflow, but not all simulations are equal. We set out to determine how engineers and product designers make use of specialized analyses, how they incorporate nonlinear simulation into their work and how they rate the available software. Download Now
White Paper – Data Security and Know-How Protection
Our data is constantly exposed to the danger of being intercepted or stolen as it wends its way over global data networks. Data security measures and measures for protecting intellectual property should not, however, first be implemented when data is exchanged – companies must lay the foundation for these measures within their own organization. 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