×
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 Workbench
2

Ansys Workbench

Ansys Workbench

(OP)
Hello!
I read from ansys element reference that for solid 65 the key option (1) is used to include or suppress extra deformation shapes. I would like to know what extra deformation shape mean.

RE: Ansys Workbench

2
Here is your answer-thread569-409767: ANSYS APDL Solid45 KEYOPT(1) = 0, What is the logical meaning of Include extra displacement shapes?

Make sure you check the link at the end which provides very good information on shear locking and Volumetric locking in context of elements options.

Also note that mathematically, extra shape functions are added when KEYOPT(1) = 0 is set(include extra displacement shapes). Check this Link and this Link

Also SOLID65 is legacy element which is discontinued. It is recommended to use the current-technology element SOLID185.

RE: Ansys Workbench

(OP)
Thank you NRP99 for your answer
I tried to use SOLID185, but I didn't find how to input the tensile and compressive strength of concrete.
I am doing a simulation for rc frame, when I suppress extra deformation ansys gives me close results to experimental ones, but when I input KEYOPT(1)= 0 (include extra deformation shapes) the results drifting away from experimental. My question is how can I know if I need extra displacement shape or not?

RE: Ansys Workbench

I have not worked with concrete material model.

Perhaps you should check your mesh density for difference in results. Also I think KEYOPT(1) = 0 is used when you have high distortion or bending of elements. This option will alleviate the shear locking by introducing extra shape functions. This is what I understand from the above links.

Check this Link for more information on concrete modelling.

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



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