Question

radyo dium conter est at the 0.00 nereal is al Problem No. 3 (17 pts) Show all of your work to get full credit. Calculate the Torque that can be applied to Bolt EE from the following information. Units = inches, lbs Load 1 Bolt EE 一品 MAT BB BB road? Toad MA SAAT Load 2 Proof of Strength Stress = 95,000 psi Ct = 0.20 Diameter of Bolt EE (in) = 1.30 n = 12 threads/inch

Answer 1

Data given:

Bolt dia D = 1.30

n = 12 TPI

Proof strength St = 95000 psi

Tensile Stress Area At  

This is double shear bolt case:

Fs = shear load lbs

Bt = bearing stress psi

Mat AA t = 0.6 in

BB t = 1.2 in

At = 1 (0 - 0.9743)* P (1.30 - 0-9243) At = 1.166 in Preload FPL = 0.75 Froof Forny = Sprogtat - 95000 x 1.166 = 110770 pound Hence - for FOL - 0.7 = 0.75*110770 83077.5 lb. Torque T E XD XFPL = 0.2 x 113883077.5 T= 21600.15 Ibrin

For Double Shear Bult Shear load in Bolt cc F = Shear stress X Area Shear Stress & 2x mad" - - 18000x 283.14(1.3032 Ę - 47759.4 lbs

Now Bearing load for Mat BB t for Mat Bb = 1.2 FBB = Bextxd 22000X 1.2x1.3 FABB = 34320 lbs. Beasing streg for Mit AA Be a to 2xtxd 13000 2x0.6x13 BE =8333.33 Psi. Format. BB 븞 Exd 26000 Ti 2x1.3 16666,66 Psi Bt.2