A DYNAMIC PREDURE FOR EVALUATING RESILIENT MOUNTINGS

The high frequency transmission characteristics of machinery isolators has been neglected for many years. However, the development of high speed machinery and the iraportance of sound transmission through structures make it desirable to evaluate the transmissibility of machinery mountings above their natural frequency. The purpose of this thesis is to suggest a successful method for comparing steady-state response of resilient mountings in a frequency range from approximately 10 cycles per second to 2000 cycles per second at maximum static loads of approximately 100 pounds. These limits vary depending upon the load, capacity of the driver, and components of the measuring system. The dynamic method of testing resilient mountings, particularly rubber mountings, which is evolved should aid arie in selecting the apparatus for research and study in this particular field. The results that one might expect from the test setup are presented. Also, the limitations of this method of testing are discussed