Question

Consider 2 primary carbon steel bearing of mass 1kg each and a secondary cast iron bearing of
weight 0.75 kg is being used to support the rotation of the 0.1 m diameter shaft as shown in the
figure below. Calculate the folloring
a. Influence coefficients. (2 marks)
b. Deflection at each bearing support. (2 marks)
c. Shaft Critical Speed. (2 marks)
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Answer 1

Explanation:

Consider 2 primary carbon steel bearing of mass 1.5 kg each and a secondary cast iron bearing of weight 0.75 kg is being used to support the rotation of the 0.1 m diameter shaft as shown in the figure below. Calculate the following: 0.2 m a. Influence coefficients. (2 marks) b. Deflection at each bearing support. (2 marks) c. Shaft Critical Speed. (2 marks) d. Provided that for every 1 m deflection is equal to a slope magnitude of 0.02 radians and the design factor is 1.5. If the total slope estimated at the primary bearing was decided to be reduced by half, calculate the new shaft diameter. (2 marks) 0.4 m 0.4 m 0.2 m