When to use bearing factor?

[KSMTNBKR]

I'm looking for some guidance on when to use the bearing factor that is presented in MIL-HDBK-516C, Section 5.3.3.f (copied below).

MIL-HDBK-516c, Section 5.3.3.f: The design stress values for bolted joints with clearance (free fit) that are subjected to
relative rotation under limit load or shock and vibration loads, are increased in magnitude
by multiplying by a 2.0 bearing factor times the stress values (for Navy, see JSSG-2006
and specific rotary wing AVPS addenda). This bearing factor does not have to be
multiplied by the fitting factor.

What is a joint "subjected to relative rotation"? Is this any joint with sloppy holes, or is it referring to more of a clevis & rod end joint designed specifically for rotation?

What amount of slop (pin-to-hole diametrical clearance) requires the bearing factor?

Thanks

 

[rb1957]

a joint "subject to rotation" means (IMO) part of a mechanism, like a landing gear bolts, with retraction providing a rotation.

but others apply factors as they deem fit. IMHO, "dry pin" factors are way over-used (relating as they do to fay seal setting up prior to assembly (something modern practices would disallow). And fitting factors.

But these factors only make joints with higher reserve factors which is a good thing.

another day in paradise, or is paradise one day closer ?

 

[SWComposites]

Please tell us exactly what type of joint you are analyzing, so we can provide specific advice.