- 1 An Air Compressor With Mass 500 Kg Has An Eccentricity Mie 50 Kg Cm And Operates At A Speed Of 300 Rpm To Achieve 1 (534.03 KiB) Viewed 34 times
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1. An air compressor with mass 500 kg has an eccentricity mie = 50 kg:cm and operates at a speed of 300 rpm. To achieve 90% vibration isolation, the compressor is to be mounted on either an isolator consisting of a spring with negligible damping, or a shock absorber having a damping ratio of 0.2 and a spring. Please keep two decimal points for your calculation. Detailed calculations. a. What is the frequency ratio, when vibration isolator k (no damping term) is added to achieve 90% isolation? b. Calculate the nature frequency (rad/s) for the system after adding vibration isolator. c. Determine the spring constant k (N/m) of vibration isolator so that it can achieve 90% isolation. d. Calculate the static deflection (mm) of spring after adding vibration isolator. e. f. Determine the amplitude (mm) of compressor after adding vibration isolator. Determine the frequency ratio when shock absorber with <=0.2 is added to the system to achieve 90% isolation? g. Calculate the nature frequency (rad/s) for the system after adding shock absorber. h. Determine spring constant k (N/m) of shock absorber so that it can achieve 90% isolation. i. Determine damping constant c (N-s/m) of shock absorber so that it can achieve 90% isolation. j. Calculate the static deflection (mm) of spring after adding shock absorber. k. Determine the amplitude (mm) of compressor after adding shock absorber.