yes the load is shared by both the lift rings, as the lifting collar fits around the shaft.
where are you getting the .3183 and .1817? and for what does T and S stand for?
Well ive done a worst case calc of converting the distributed load ( 1/2P = 7500lbs) to a point load directly in the bolt. But in this case the bending stress exceeds the allowable limits of the bolts. (w/o sf I calculate 117000 lb bending stress)..this is assuming both ends of the bolt will be...
the machinist made the ring this way to move the bare rotor and now wants to know if the coupling is safe to hang the 5000lb completed rotor...the material is 1018 steel.(ys
= 53700psi, us=63800psi) attached with gr8 5/a allen bolts (ys=120ksi us=150ksi)
im not too worried about the lifting...
here is another pic of the sketch.
How would each of you do the calc? I need help on this one as i dont have any software at work to help.
discriptions, even sketchs and equations would be helpful at this point. Im VERY resistant to let the machinst use the lift ring bc i ran a bending calc...
sorry for the delay , here is a pic of it, and here is the sketch given to me from the machinist.
I ran the calc on the bolts with a sf of 3 and it failed with a 5,000lb load (15,000 lb load after s.f) the material is 1018 steel with grade 8...
Hi everyone, I have just started a new job as an entry level mech eng working with steam turbines and steam compressors. Today I was asked to verify a proposed design for a two-pieced lifting collar / ring.
I have no clue on where to begin to analyze this and see if it will with stand the...
