1983 Volume 18 Issue 12 Pages 999-1004
Isolation properties of antivibration mounts were tested with models of the machinery casing and the ship-like structure. The mobilities of the machinery base plate and foundation bed plate of those models were found to be approximated to rigid masses at low frequencies and infinite plates for higher frequencies compared with the first local plate resonance.
Using these results and regarding resilient mount as massless spring, isolation properties of the soft and hard resilient mounts and the reduction method of the input vibration power to the ship structure were investigated.
In addition, a new type of isolation system in which a damping plate was inserted between the upper and the lower resilient mounts was devised and its superior vibration isolation effect was verified experimentally with the above mentioned models.