Optimization of Vibration Absorbers: Application to Complex Structures

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Abstract
This paper describes a method for designing a vibration absorber, incorporating polymer spring/damping elements, for attachment to a complex main system. The point of attachment can be remote from the position(s) of interest in the main system, for which any characteristic of absolute or relative receptance can be considered. Tests on a machine tool show that butyl rubber provides an effective and convenient damper material, even with main systems already possessing a high level of vibration damping, and that the addition of an absorber can effect a considerable improvement in the predicted performance of the machine. The addition of more than one absorber is likely to provide greater improvements.