Problem # 4: The cylinder shown in the figure is pressurized up to
7MPa
and is connected to the cylinder head by sixteen M
24\times 3
metric grade 8.8 bolts. The bolts are evenly spaced around the perimeters of the two circles with diameters of 1.2 and
1.5m
, respectively. The cylinder is made of cast iron and its head is made of high carbon steel. Assume that the force in each bolt is inversely related to its radial distance from the center of the cylinder head. Calculate the safety factor guarding against failure due to static loading.