BTH-1 2005 combined normal and shear stresses - how to apply
BTH-1 2005 combined normal and shear stresses - how to apply
(OP)
i am designing a drill casing pulling lug. the lug will never see the loads it is designed for but i want to have a complete design i can stamp and file away.
Question: how do you determine the shear stress that is used in the formula (3-37) that determines fcr? the most conservative way is to use a single plane thru the lug, not sure if that is right.
any thoughts are appreciated,
i have attached a sketch and some calcs so you can follow along my train of thought.
thanks in advance
Question: how do you determine the shear stress that is used in the formula (3-37) that determines fcr? the most conservative way is to use a single plane thru the lug, not sure if that is right.
any thoughts are appreciated,
i have attached a sketch and some calcs so you can follow along my train of thought.
thanks in advance






RE: BTH-1 2005 combined normal and shear stresses - how to apply
i hope i have not enclosed too much information, what i am looking for is the correct interpretation of the formula:
fcr = (fx^2 -fxfy + fy^2 + 3fv^2)^.5 is less than Fcr= Fy/Nd (3-37) from BTH-1-2005
this is the interaction formula for normal and shear stresses.
thanks
RE: BTH-1 2005 combined normal and shear stresses - how to apply
RE: BTH-1 2005 combined normal and shear stresses - how to apply
RE: BTH-1 2005 combined normal and shear stresses - how to apply