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

Strand7 Bending Moment Sign Convention

Strand7 Bending Moment Sign Convention

Strand7 Bending Moment Sign Convention

Hi, what direction (clockwise or counter-clockwise) are the positive and negative bending moment values found in the results tables. Results are based on the global axes.

RE: Strand7 Bending Moment Sign Convention

I’ve never thought about the sign.

I always just look at the bending diagram, which is drawn on the tension side.

RE: Strand7 Bending Moment Sign Convention

Its just that I'm reading reactions from nodes on plates. so it's a bit tricky to determine what is actually happening.

RE: Strand7 Bending Moment Sign Convention

I'm not familiar with the software. If you run a simple structure, such as a beam fixed both ends, it should be possible to figure out the sign convention used.


RE: Strand7 Bending Moment Sign Convention

I use the international convention... an orthogonal right hand coordinate system with the (force direction signs) X (sign values for the face the forces are acting on).

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Do you feel any better?


RE: Strand7 Bending Moment Sign Convention

You aren't the only one who finds these things confusing. The diagram below is helpful. It is from the Rel 3 help, but the same applies to previous versions:

But rather than worrying about clockwise or anti-clockwise, I recommend displaying the plates as solids, then displaying surface stress values, so you can see which face is in tension.

Doug Jenkins
Interactive Design Services

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