×
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

Convergence problems with ANSYS Workbench SOLID 65 finite element

Convergence problems with ANSYS Workbench SOLID 65 finite element

Convergence problems with ANSYS Workbench SOLID 65 finite element

(OP)
Hello everyone,

I am modeling the debonding between concrete and CFRP subjected to tangential loading (single shear test mode II) using ANSYS Workbench, I used the contact element with CZM created in engineering data. now I have a convergence problem in the model. as you know with workbench you can't choose the element type. you have to insert commands for Solid65. When I use the SOLID 65 concrete finite element, my models lose convergence too early. If I remove cracking and crushing capability (Suppress the commands), there are no convergence problems. Why does this happen and how can I avoid it (I need cracking and crushing)?
I already tried the following to get my model to converge:
1- Refining the mech.
2- Reducing the normal stiffness of the contact region
3- Use newton Raphson residuals.
4- Playing with steps and sub-steps.

Any help or suggestions will be highly appreciated.
Thanks in advance.

RE: Convergence problems with ANSYS Workbench SOLID 65 finite element

Usually solid65 have bad convergence and requires appropriate data.
We tried to find optimal parameters for concrete and we presented our results here (in Russian)
http://cae-cube.ru/opredeleniye-optimalnykh-parame...
I hope it may help you especially if you use dictionaries =).

RE: Convergence problems with ANSYS Workbench SOLID 65 finite element

(OP)
thank you very much "beastgod" for your reply, really appreciate it.

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