KDamping: A stiffness based passive damping concept

I. Antoniadis, I. Sapountzakis, S. Kanarachos, K. Gryllias

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Abstract

The KDamper is a novel passive vibration isolation and damping concept, based essentially on the optimal combination of appropriate stiffness elements, which include a negative stiffness element. The KDamper concept does not require any reduction in the overall structural stiffness, thus overcoming the corresponding inherent disadvantage of the "Quazi Zero Stiffness" (QZS) or "Negative Stiffness" (NS) isolators, which require a drastic reduction of the structure load bearing capacity. Compared to the traditional Tuned Mass damper (TMD), the KDamper can achieve better isolation characteristics, without the need of additional heavy masses, as in the case of the TMD. Contrary to the TMD and its variants, such as the inerter, the KDamper substi-tutes the necessary high inertial forces of the added mass by the stiffness force of the negative stiffness element. Among others, this can provide comparative advantages in the very low fre-quency range. Moreover, since the isolation and damping properties of the KD essentially result from the stiffness elements of the system, further technological advantages can emerge, in terms of weight, complexity and reliability, It should be mentioned, that the KDamping concept does not simply refer to a discrete vibration absorption device, but it consists a general vibration ab-sorption concept, applicable also for the design of advanced materials or complex structures. Such a concept thus presents the potential for numerous implementations in a large variety of technological applications, while further potential may emerge in a multiphysics environment. The paper proceeds to a review of the optimal design and selection of the parameters of the KDamper, which follows exactly the classical approach used for the design of the TMD. It is thus theoretically proven that the KDamper can inherently offer far better isolation and damping properties than the TMD. Finally, an application concerning the implementation of the KDamper for the design of a low frequency vertical vibration isolator is presented.
Original languageEnglish
Title of host publicationProceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics
EditorsP. Sas, D. Moens, A. van de Walle
PublisherKU Leuven
Pages535-546
Number of pages12
ISBN (Print)978-907380294-0
Publication statusPublished - Sep 2016
Event27th International Conference on Noise and Vibration Engineering, ISMA 2016 and International Conference on Uncertainty in Structural Dynamics, USD2016 - Leuven, Belgium
Duration: 19 Sep 201621 Sep 2016

Conference

Conference27th International Conference on Noise and Vibration Engineering, ISMA 2016 and International Conference on Uncertainty in Structural Dynamics, USD2016
CountryBelgium
CityLeuven
Period19/09/1621/09/16

Fingerprint

Damping
Stiffness
Bearing capacity
Vibrations (mechanical)
Sorption
Loads (forces)

Bibliographical note

The paper is restricted to KU Leuven Association members only

Cite this

Antoniadis, I., Sapountzakis, I., Kanarachos, S., & Gryllias, K. (2016). KDamping: A stiffness based passive damping concept. In P. Sas, D. Moens, & A. van de Walle (Eds.), Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics (pp. 535-546). KU Leuven.

KDamping: A stiffness based passive damping concept. / Antoniadis, I.; Sapountzakis, I.; Kanarachos, S.; Gryllias, K.

Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics. ed. / P. Sas; D. Moens; A. van de Walle. KU Leuven, 2016. p. 535-546.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Antoniadis, I, Sapountzakis, I, Kanarachos, S & Gryllias, K 2016, KDamping: A stiffness based passive damping concept. in P Sas, D Moens & A van de Walle (eds), Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics. KU Leuven, pp. 535-546, 27th International Conference on Noise and Vibration Engineering, ISMA 2016 and International Conference on Uncertainty in Structural Dynamics, USD2016, Leuven, Belgium, 19/09/16.
Antoniadis I, Sapountzakis I, Kanarachos S, Gryllias K. KDamping: A stiffness based passive damping concept. In Sas P, Moens D, van de Walle A, editors, Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics. KU Leuven. 2016. p. 535-546
Antoniadis, I. ; Sapountzakis, I. ; Kanarachos, S. ; Gryllias, K. / KDamping: A stiffness based passive damping concept. Proceedings of ISMA 2016 - International Conference on Noise and Vibration Engineering and USD2016 - International Conference on Uncertainty in Structural Dynamics. editor / P. Sas ; D. Moens ; A. van de Walle. KU Leuven, 2016. pp. 535-546
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