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

Virtual Work Diagrams

Virtual Work Diagrams

Virtual Work Diagrams

I have only recently started to investigate the Energy/Virtual Work Diagrams feature within ETABS.

I'm curious how many others are using it to assess lateral stability systems?

Few initial thoughts:
- Would there be any benefit if CSI broke down each degree of freedom (ie axial deformation of a column * axial load) as opposed to take the sum of the individual Forces*Displacements + Moments*Rotations?
- This was you could clearly identified what in particular is driving the design (axial, shear or moment).
- When would you ever want to multiply forces and displacements from different load cases?
- Seems like a handy tool to compare two different lateral stability systems. What effect does adding an outrigger here have, what effect does thickening the walls here have... etc etc...

Keen to hear other thoughts on how they use these diagrams (if anyone does).

RE: Virtual Work Diagrams


I'm curious how many others are using it to assess lateral stability systems?

I've never used it for lateral stability. However, I have looked at the results to understand which beams or columns are most effective in resisting drift. That way, I can focus on up-sizing the members that are likely to make the biggest difference.

Not sure that it was as insightful as I hoped it would be. I was thinking of using it as a way to automate member sizing most efficiently. I didn't get very far in the process though.

RE: Virtual Work Diagrams

Thanks Celt, I came across it when I was researching this.

Surely other people have used this method and have some opinions on the above queries?

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