The shaft shown in Figure P11-4 was designed in Problem 10-19. For the data in row (a) of Table P11-1, and the corresponding diameter of shaft found in Problem 10-19, design suitable bearings to support the load for at least 5E8 cycles at 1 200 rpm using deepgroove ball bearings. In addition to the radial loads found in Problem 10-19, the right bearing supports an axial load that is 120% of the concentrated transverse load P. The shaft diameter is 1.153 in, the L10 design life is 500E6 revolutions, and the concentrated transverse load is 1 000 lb. Assume an axial-force factor = 1.2 and a shaft-rotation factor = 1.0. Also assume that the shaft diameter can be reduced at the left bearing where the moment is zero.
The context should be an area (not only geographic but also service area) that you are genuinely interested in – in your case I understand that this would be all acute care hospitals in England? You could focus more the assignment if you wish, for example, by looking at a specific type of hospitals like NHS psychiatric hospitals or District General Hospitals,
November 18, 2016
11:20 pm
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