Forced Vibration Ppt

Question 1

Vibration occurs when a system is subjected to periodic force

Answer 1

Forced Vibration

Question 2

Approaches zero as time approaches infinity

Answer 2

Complimentary Transient Solution

Question 3

The vibration that will remain
Focus of forced vibration

Answer 3

Particular steady state solution

Question 4

Phenomenon of increased amplitude that occurs when frequency of a periodically applied force is equal or close to a natural frequency of the system on which it’s acts.

Answer 4

Resonance

Question 5

When Tacoma Narrows Bridge collapse

Answer 5

November 7,1940

Question 6

Cause of collapse.

Answer 6

1. Resonance from vortex shedding
2. Aeroelastic flutter.

Question 7

In the sane direction

Answer 7

In phase

Question 8

Opposite Direction

Answer 8

Out of phase

Question 9

Defined as the ratio of the amplitude of the steady state vibration to the displacement that would be achieved by static deflection

Answer 9

Magnification factor

Question 10

Ratio of forced frequency and natural frequency

Answer 10

Frequency ratio