Question

Q. An air compressor of 450 kg operates at a constant speed of 1750 rpm. Rotating parts are
well balanced. The reciprocating mass is 10 kg and the crank radius is 100 mm. The mounting
introduces the viscous damping of damping factor of 0.15. Specify the spring for the mounting
such that only 20% of the unbalanced force is transmitted to the foundation. Find out the
amplitude of transmitted force.​

Answer 1

Answer:

Transcribed image text: An air compressor of 450 kg operates at a constant speed of 1750 rpm. The rotating parts are well balanced. The reciprocating parts are of 10 kg. The crank radius is 100 mm. If the damper for the mounting introduces a damping ratio of 0.15, (i) specify the springs for the mounting such that only 20 percent of the unbalanced force is transmitted to the foundation, and ii estimate the amplitude of the transmitted force and the force reduction.