82 Lecture 4 
RESPONSE RATIO, R (db) 
HEVEA MOUNTING IN SIMPLE SYSTEM 
SUPPORTED BY MASS LOADED FOUNDATION , m/M= 0.2 
HEVEA MOUNTING IN COMPOUND SYSTEM , B= 0.2 
----HEVEA MOUNTING IN SIMPLE SYSTEM, m/M= 8-0 
PARALLEL MOUNTING IN COMPOUND SYSTEM, B=0.2 
-100 
| 5 10 50 100 500 1000 
FREQUENCY (CPS) : 
Fig. 4.13. Comparison of various mounting systems on a resonant foundation. 
missibility curves would have coincided at high frequencies with each other and 
with that of an undamped simple mounting system. In view of this it is not to 
be expected that the dynamic absorber as described would offer any additional 
