Question

V): It is usual practice to design a hub such that its outside diameter is about twice the bore diameter. It is also known that a selective assembly should be used when shrinking a hub on a shaft. The purpose of this problem is to determine how small and how large stresses can be with a shrink fit (class 8 fit) if a selective assembly is not used. As shown in Fig. 3, determine for a 2" diameter solid shaft, the actual maximum and minimum tangential stresses that will result if the maximum and minimum interferences should be used for a hub with a 4" outside diameter. The shaft and hub are both made of steel. Poisson's ratio may be taken as equal to 0.3 (20 points) 2

Answer 1

2C2 (4) 6 (2.5x10) C ber 2. 2 6 tco or dielectre =0.000 GdMg vence

shaf t Toleveme = o.coo6 d'3 inc vad fern 2.002FSsass to 2.003519 ECo s Scanned with CamScanner