Investigation of Elastomeric Vibration Isolators.

摘要

The study was conducted to develop a simple mathematical model of the T22-AB-2elastomeric vibration isolator. The isolators were tested both statically and dynamically to determine their response characteristics. It was found that the static stiffness as determined from force-deflection curves is significantly less than the stiffness determined from vibration testing. The dynamic modulus and loss factor were determined to be nonlinear functions of isolator displacement. Two mathematical models were developed. A linear model is adequate in predicting resonant frequencies and resonant peaks for double amplitude deflections of .1inch or less. A nonlinear model following Duffing's method shows a small amount of the nonlinearity of the isolators. It was determined that it is not possible to develop a simple mathematical model of elastomeric vibration isolators based on their static characteristics. (Author)