An engineer decided to replace the four springs in Q1(b) with four shock mounts (each of stiffness k and viscous-damping constant c). Consider an unbalanced force generated by the machine in cooling tower unit is given by 500 N and provided damping ratio, 3 = 0.5, determine each shock mount stiffness k and its viscous-damping constant c such that the maximum amplitude of the vibration is X mm. Here, the value of X indicating of the number of your group. (c) For example, if your group number is 15 gives the value of amplitude X = 15 mm. If your group number is 9 gives the value of amplitude X = 9 mm. [Note: The maximum amplitude of vibration occurs when r = /1– 23²]

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Question
A cooling tower unit in industry plant weighing X kN is supported by four
springs as shown in Figure Q1. Design the air springs such that the natural
frequency of vibration of the unit lies between 4 rad/s and 8 rad/s. Here, the
value of X indicating of the number of your group.
(b)
For example, if your group number is 15 gives the value of weight X = 15 kN.
If your group number is 9 gives the value of weight X = 9 kN.
(c)
An engineer decided to replace the four springs in Q1(b) with four shock
mounts (each of stiffness k and viscous-damping constant c). Consider an
unbalanced force generated by the machine in cooling tower unit is given by
500 N and provided damping ratio, 3 = 0.5, determine each shock mount
stiffness k and its viscous-damping constant c such that the maximum
amplitude of the vibration is X mm. Here, the value of X indicating of the
number of your group.
For example, if your group number is 15 gives the value of amplitude X =
15 mm. If your group number is 9 gives the value of amplitude X = 9 mm.
[Note: The maximum amplitude of vibration occurs when r = /1 - 23²]
Transcribed Image Text:A cooling tower unit in industry plant weighing X kN is supported by four springs as shown in Figure Q1. Design the air springs such that the natural frequency of vibration of the unit lies between 4 rad/s and 8 rad/s. Here, the value of X indicating of the number of your group. (b) For example, if your group number is 15 gives the value of weight X = 15 kN. If your group number is 9 gives the value of weight X = 9 kN. (c) An engineer decided to replace the four springs in Q1(b) with four shock mounts (each of stiffness k and viscous-damping constant c). Consider an unbalanced force generated by the machine in cooling tower unit is given by 500 N and provided damping ratio, 3 = 0.5, determine each shock mount stiffness k and its viscous-damping constant c such that the maximum amplitude of the vibration is X mm. Here, the value of X indicating of the number of your group. For example, if your group number is 15 gives the value of amplitude X = 15 mm. If your group number is 9 gives the value of amplitude X = 9 mm. [Note: The maximum amplitude of vibration occurs when r = /1 - 23²]
Cooling Tower
Springs
Cooling
Figure Q1
Transcribed Image Text:Cooling Tower Springs Cooling Figure Q1
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