Polymeric dampers are used in many fields for vibration isolation. These devices are based upon a low stiffness and high damping connection between a vibrating support and the item to be fastened. Whenever the connection is assured by a polymeric element, it is mandatory to be aware that stiffness and damping change with the excitation frequency. The characterization of stiffness and damping of the polymeric element in terms of storage modulus and loss modulus is commonly carried out at low frequency by means of a Dynamic Mechanical Analysis (DMA), nonetheless this approach cannot be applied at higher frequency. In the present study, a novel experimental approach for estimating the frequency dependent storage modulus and loss modulus in a polymeric vibration damper is presented. The proposed method is based on a direct measurement of the energy loss in hysteretic cycles and it is suitable for simple implementation using common instruments for vibration measurement.

Dynamic characterization of polymeric vibration dampers / Barbieri, Marco; DE FELICE, Alessandro; Pellicano, Francesco; Sorrentino, Silvio; Zippo, Antonio. - (2020), pp. 381-384. ((Intervento presentato al convegno MEDYNA 2020, 3rd Euro-Mediterranean Conference on Structural Dynamics and Vibroacustics tenutosi a Napoli, Italia nel 15-19 Febbraio 2020.

Dynamic characterization of polymeric vibration dampers

Marco Barbieri
;
Alessandro De Felice;Francesco Pellicano;Silvio Sorrentino;Antonio Zippo
2020

Abstract

Polymeric dampers are used in many fields for vibration isolation. These devices are based upon a low stiffness and high damping connection between a vibrating support and the item to be fastened. Whenever the connection is assured by a polymeric element, it is mandatory to be aware that stiffness and damping change with the excitation frequency. The characterization of stiffness and damping of the polymeric element in terms of storage modulus and loss modulus is commonly carried out at low frequency by means of a Dynamic Mechanical Analysis (DMA), nonetheless this approach cannot be applied at higher frequency. In the present study, a novel experimental approach for estimating the frequency dependent storage modulus and loss modulus in a polymeric vibration damper is presented. The proposed method is based on a direct measurement of the energy loss in hysteretic cycles and it is suitable for simple implementation using common instruments for vibration measurement.
19-feb-2020
MEDYNA 2020, 3rd Euro-Mediterranean Conference on Structural Dynamics and Vibroacustics
Napoli, Italia
15-19 Febbraio 2020
381
384
Barbieri, Marco; DE FELICE, Alessandro; Pellicano, Francesco; Sorrentino, Silvio; Zippo, Antonio
Dynamic characterization of polymeric vibration dampers / Barbieri, Marco; DE FELICE, Alessandro; Pellicano, Francesco; Sorrentino, Silvio; Zippo, Antonio. - (2020), pp. 381-384. ((Intervento presentato al convegno MEDYNA 2020, 3rd Euro-Mediterranean Conference on Structural Dynamics and Vibroacustics tenutosi a Napoli, Italia nel 15-19 Febbraio 2020.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1203361
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