×
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

Contact stress on bolt shank

Contact stress on bolt shank

Contact stress on bolt shank

(OP)
The problem is this: a bolt is inserted into a plate.  The connection has a tight tolerance between the bolt shank's OD and the hole's bore diameter.  The bolt is designed to withstand a constant tension force applied to the opposite end of the bar.

I am looking for the pressure distribution at the interface of the bolt shank and hole's inside surface.

Steven Keays
www.naiad.ca

RE: Contact stress on bolt shank

The bolt will get slightly (very) thinner along the shank when it's under tension, so I think your point may be moot (if I understand the question right).

RE: Contact stress on bolt shank

MetalGuy is correct in his statement, but you may have to add or take off a "very" depending on the stength and tension applied to bolt.

Here is website you might take a look at.

http://www.hexagon.de/dose/dose1e.htm

RE: Contact stress on bolt shank

SDS1,

Are you wanting to determine the tearout stresses in the plate?  The bolt is a pin loaded in shear, so contact stresses on the shank are not considered.

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

RE: Contact stress on bolt shank

SDS1,

From your description of the problem, the contact force between the bolt and the hole bore would be nil in a tension application assuming that it was inserted in a clearance fit hole.

If there is a shear component, or an interference fit, then it wil change slightly.  If it is an interefrence fit, then the worst condition is with not bolt tension load, and only lessens with the application of tension load as previously mentioned.

If this does not help, please clarify the design.

Regards,
jetmaker

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