Question

QA4 A brass sleeve S is fitted over a steel bolt B, Fig QA4, and the nut is tightened until it is just snug. The bolt has a diameter de 25 mm and the sleeve has inside and outside diameters di 26 mm and dz 36 mm, respectively. (a) Calculate the temperature rise AT that is required to produce a compressive stress of [14 marks) 25 MN/m2 in the sleeve. (b) Find the overall deflection if the overall length of the sleeve is 150 mm. 6 marks] Use the material properties as follows: For the sleeve, α,-21 x 10-pC and Es 100 GNm2 For the bolt, α8 = 10 x 10-8 pC and Es = 200 GN/m2. d2 di Sleeve (S) dB Bolt (B) Fig QA4

Answer 1