Dynamic Vibration Absorbers of Conventional and Novel Design.
PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB
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The behavior of dynamic vibration absorbers of conventional and novel design has been investigated experimentally. Transmissibility and relative displacement measurements have been obtained for absorbers attached to a one-degree-of-freedom primary system, and the resultant data have been compared with the predictions of existing theories. The absorbers tested ranged from those possessing a conventional mass-spring-dashpot configuration, to those possessing novel configurations. In all cases, the experimental results were in close agreement with theoretical predictions. The novel configurations included 1 an absorber employing a viscoelastic Butyl rubber material as a combined spring-and-damper element, 2 absorbers employing damped laminated beams as spring-and-damper elements, 3 so-called dual dynamic abosrbers -- a conventional, viscously damped absorber in parallel with a less massive undamped absorber, and 4 a single nominally undamped absorber or a pair of nominally undamped absorbers attached to a heavily damped primary system.
- Test Facilities, Equipment and Methods