Section 3

1. Some delicate equipment is transported using "air-ride" suspension

transport, combining a mechanical spring and gas

suspension strut as shown.

a. Explain the natural frequency of vibration in a

combined spring / gas strut suspension system.

How can such a suspension system be viewed

as an ideal mass spring system?

b. Determine the amplitude and phase angle of

the transient response within this suspension

system.

Damper

Coil spring

c. As far as possible, unnecessary vibrations need to be prevented in this

suspension. Identify the conditions needed for mechanical resonance and

measures that are taken to prevent this from occurring.