Contact US

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!

*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

ANSYS Workbench

ANSYS Workbench

ANSYS Workbench

Hello Dear engineers,
I'm new in this community, as I was looking for some answers regarding my project I come up with this awsome platform.
recently I'm doing FEA for UHPFRC (Ultra-High Performance Fiber Reinforced Concrete) using ANSYS workbench.
I have some question If you can help me.
I want to simulate failure in slab, using UHPFRC.
I have added the following data

and the following command to ANSYS workbench
But during simulation I have the following errors,

particularly the first two error I don't know how to solve them.
Pleas provide me with any suggestions or solution, I Higley appreciate your help. Thank you for your time

RE: ANSYS Workbench

What are the boundary conditions ? This model is likely underconstrained.

RE: ANSYS Workbench

this is the boundary condition
A fixed supper (cylinder fixed supper under the slab)
displacement in the top middle of the slab
and there is a notch under the slab as well.

RE: ANSYS Workbench

Is the fixed part connected with the slab ? You could run a modal analysis to see if there are any rigid body motions.

RE: ANSYS Workbench

the fixed part is implanted with the body, and there is no rigid body

RE: ANSYS Workbench

All right but if those are separate parts then they should be connected with some kind of embedded region constraint. It seems that Ansys doesn’t support this type of interaction so you should make a hole in the slab to place the cylinder or model the cylinder using line elements (those should be easier to embed in solid mesh).

I was talking about rigid body motions - translations and rotations of underconstrained parts.

RE: ANSYS Workbench

I don't think this is the problem because If I remove menetrey william data from engineering data, I can run simulation without any error.
I think when adding menetrey william data I need to add some other command which I can not find.
What I'm looking for is force vs deflection graph, and I need softening part
to be specific, I want this graph, where the slab start to deform and then after first crack, the load is decreasing and displacement is increasing.

RE: ANSYS Workbench

Maybe it’s not a direct cause of the problem but I would still carefully check this connection and make sure that the software handles it properly.

When it comes to material properties, try testing them on a simple model first (maybe even single element as it’s often done).

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


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. 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