Question

Required information A 1.75-in. steel plate and a 1-in gray cast iron plate are compressed with one bolt and nut. The bolt is in-13 UNC. A 12 N American Standard plain washer is used under the head of the bolt and under the nut. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the bolt stiffness. The bolt stiffness is Mib/in.

Also the length of bolt rounded up to nearest 1/4 in. thank you

Answer 1

obtain the washer thickaels from Taste Basic dimensions American Standard pain washers for forstener size of /t. t = 0.095 in. grip length, d = 2 + gate + at nut 16 2414 210.095) = 3, 191m. obtain height from a Tables-31, Dimensions of Henagonal uts for % in nominal size Ha 7 in. Length of the bolt 2 L = l + = 3.19 + 7 = 3.63m & (3.75 in from ee (8-13 l = 2(0.5) +0.25 = 1.25 n. from Table 8-7 dd = L-L 16 adt 23.75-1.25 -2.5'm dald = 3.19 -2.5 0.69 in A = 77 (0.5% from Table from equation 8-10, K6= ( for Start - 30 MPS = 0. 1963 in 2 18-2 = 0.1419 en Ad AG Asle tald 6.1963) (0.1419) (30) 0.1963(0.69)+ 0.419(25) 1.705 Mbffin

for cast trom, D=0,15 m E = T4.6 Mosi for Steel washer frustum: t = 0.095 in. d 0.531 in (Table A-32). and E=30 Mpsi 0.5474 (30)0.531 7.155609095) +0.75 -0.537.35 +0531] (1.55(0.093) +0.75 +0.53][0.75-0.53] 89.20 * Mifflin. Top plate, top steel frustum d = 0.5 in, D=075 +2 (0.095) tano" -0.86 in. t = 1.375 t = 30 MPS E = 830 Mosi uising can (8-20) K₂= 29.742 Mistlin. Top plate, low steel frustum : 0.375 in, a=0.5 in. D = 0.56 +2(1) tan so =2. alsin. using an (-20) : K3= 293.979 1st/in. Cast iron t = lin. dz 0.5m, D=0.75+2/0.095) tan30° 6 = 14.5mpsi wsing een (8-20) ky = 15.99 Mistlin, from an 8 (1) km = 12, *** % ** = 0.86 in 48.19 MIGR + + + + 15.99 2393.989 24.942 $9.2