Contact stress on bolt shank 1

[skeays]

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

http://www.naiad.ca

 

[Metalguy]

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).

 

[unclesyd]

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

 

[CoryPad]

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.

 

[jetmaker]

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

 

[arto]

This one is pretty neat:

http://www.csa.ru/CSA/CADS/docs/ansys/tut2/ansys.html

look down at #19 near the bottom