×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

When screw is subject to shear load with the shim between the joint

When screw is subject to shear load with the shim between the joint

When screw is subject to shear load with the shim between the joint

(OP)
Hi Everyone,

I am designing the screw to transfer the shear load from the 1/4" thickness of steel plate to the underside of the HSS beam.

If there is 3/4" thickness of the plywood between the steel plate and the u/s of HSS beam, will this introduce a bending stress on the designed screw?

I've attached the diagram and calculation for your review and feedback. Please let me know if i'm on the right approach.

Thank you

RE: When screw is subject to shear load with the shim between the joint

Jsu0512:
You have .25kN (56lbs.) of lateral loading out near the head of the screw, applied through the .25” bracket pl. The screw hole in that bracket pl. should be pre-drilled slightly oversized, so that the screw can not bottom out btwn. the screw head and any thread that it has made in that pl. Also, use this pl. as a drilling template for the plywd. and the HSS. Then the screw is essentially fixed at its thread into the side of the HSS, as it is tightened. The screw will act as a cantilever, pretty much fixed at the HSS, and maybe slightly restrained by the screw head on the pl. applying a bit of moment as it reacts against the bracket pl. when tightened. I would ignore this later restraint and treat the screw as a simple canti.

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


Resources

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