A decision is needed regarding the type of isolator (suspension) to use with a machine that has some unbalance. When placed on an isolator having springs alone, the machine weight causes a 3 mm deflection. When the machine is run at 300 rpm supported on four steel springs both the motion of the machine and force transmitted to the supporting structure are marginally acceptable. A colleague has recommended that the machine be run at a higher speed (500 rpm) and that a different isolator be used. The proposed isolator is deflected by 4 mm under static load and has a damping ratio of 0.25. Do you concur with the recommendation? Justify your response in terms of both machine motion and force transmitted to the structure.
A decision is needed regarding the type of isolator (suspension) to use with a machine that has some unbalance. When placed on an isolator having springs alone, the machine weight causes a 3 mm deflection. When the machine is run at 300 rpm supported on four steel springs both the motion of the machine and force transmitted to the supporting structure are marginally acceptable. A colleague has recommended that the machine be run at a higher speed (500 rpm) and that a different isolator be used. The proposed isolator is deflected by 4 mm under static load and has a damping ratio of 0.25. Do you concur with the recommendation? Justify your response in terms of both machine motion and force transmitted to the structure.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A decision is needed regarding the type of isolator (suspension) to use with a machine that has some unbalance. When placed on an isolator having springs alone, the machine weight causes a 3 mm deflection. When the machine is run at 300 rpm supported on four steel springs both the motion of the machine and force transmitted to the supporting structure are marginally acceptable. A colleague has recommended that the machine be run at a higher speed (500 rpm) and that a different isolator be used. The proposed isolator is deflected by 4 mm under static load and has a damping ratio of 0.25. Do you concur with the recommendation? Justify your response in terms of both machine motion and force transmitted to the structure.
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