Washer, dy = 20 mm 12-mm diameter bolt AT 15 mm 18 mm Clevis, (= 10 mm (a) Bolt and washer (d, d) 12-mm diameter bolt ΔΤ 15 mm Clevis, t= 10 mm Mounting plate () (b) PROBLEM 2.5-4
A steel rod. of 15-mm diameter is held snugly (but without am1
initial stresses) between rigid walls by the arrangement shown in the figure part a. (For the steel rod, use a = 12 X KT 6 fX and E = 200 GPa.)
(a) Calculate the temperature drop AT (degrees Celsius) al which the average shear stress in the 12-mm diameter bolt becomes 45 MPa. Also, what is the normal stress in the rod?
(b) What are the average bearing stresses in the bolt and clevis al A and between the washer {dw= 20 mm) and wall (r = IS mm) at £?
(c) If the connection to the wall at B is changed to an end plate with two bolts (see figure part b), what is the required diameter dhof each bolt if the temperature drop is A J" = 38°C and the allowable bolt stress is 90 MPa?
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