b) A machine of mass 500 kg is supported on a vertical flexible mounting with equivalent stiffness of 70 kN/m, modeled as a single degree-of-freedom spring-mass system as shown in Figure 1. Any horizontal motion of the system should be ignored. In normal operation the machine is subjected to a vertical force F(t) Fo sin ot where the amplitude Fo is 300 N. The machine was observed to vibrate severely at frequency of 110 rpm. Justify why the machine experienced high vibration phenomena and suggest a solution to attain 80% of isolation.

b) A machine of mass 500 kg is supported on a vertical flexible mounting with equivalent stiffness of 70 kN/m, modeled as a single degree-of-freedom spring-mass system as shown in Figure 1. Any horizontal motion of the system should be ignored. In normal operation the machine is subjected to a vertical force F(t) Fo sin ot where the amplitude Fo is 300 N. The machine was observed to vibrate severely at frequency of 110 rpm. Justify why the machine experienced high vibration phenomena and suggest a solution to attain 80% of isolation.

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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