Tearout Failure
Tearout Failure
(OP)
If the e/D is 2 or greater, do you have to worry about tearout failure or not? One of my team mates says that, if e/D is 2 or greater then, fatigue is not an issue, but tear out failure should be calculated. Can anyone help. Thanks





RE: Tearout Failure
Don't think you can make a blanket statement about fatigue; depends on joint config, material, fastener, loading spectrum, etc, etc.
Why not just calculate the tear out as well as bearing static margins?
RE: Tearout Failure
2D is a good "rule of thumb", but you still need to do your "due diligence".
Garland E. Borowski, PE
Engineering Manager
Star Aviation
RE: Tearout Failure
i would always check shear-out as one of the possible modes of failure.
fatigue is an altogether different thing, sure with a reasonable edge distance the Kt is pretty much 3 (for an open hole) but not something i'd dismiss. possibly not something i'd spend a ton of time on either ... it depends on the structure involved.
RE: Tearout Failure