transmissibility and rotating unbalance

Question 1

what is displacement transmissibility?

Answer 1

a measure of how much an external force or motion influences the displacement of a mechanical system’s output, expressed as a ratio

Question 2

what is force transmissibility?

Answer 2

a measure of how much an external force applied to a mechanical system affects the force experienced by that system’s output, expressed as a ratio.

Question 3

what 3 properties are desirable for effective isolation of vibrating systems?

Answer 3

r should be large
natural frequency should be small
damping ratio should be small (light damping)

Question 4

what is the impact on displacement transmissibility of changing the damping ratio for higher values of r?

Answer 4

for higher values of the damping ratio (ξ), the displacement transmissibility decreases, and for lower values of the damping ratio, it increases

Question 5

what is the transmissibility ratio?

Answer 5

the ratio of maximum steady state response magnitude to the base displacement amplitude.

Question 6

what is the transmissibility ratio used to describe?

Answer 6

how vibration is transmitted from the base to the mass.