The Proceedings of the Dynamics & Design Conference
Online ISSN : 2424-2993
2007
Session ID : 437
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437 Dynamic Vibration Absorber with Viscoelastic Materials Described by Fractional Derivatives
Yoshihiro SATOHTakero HARA
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Abstract
Dynamic vibration absorber is one of vibration control devices. It consists of a mass and a viscoelastic element. Several kinds of viscoelastic materials are employed for the viscoelastic element of the vibration absorber. The use of viscoelastic materials has possibility to simplify the constitution of the vibration absorber and make the device with low cost. In this paper, to express the dynamic properties of viscoelastic materials, a fractional dynamic model is employed, and the vibration absorber is optimized with respect to a parameter of shape factor of the viscoelastic element. As a result, it is found that optimal value is affected by dynamic properties of the viscoelastic material and the natural frequency of the main system.
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© 2007 The Japan Society of Mechanical Engineers
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