Tuned Nonlinear Energy Sink With Conical Spring: Design Theory and Sensitivity Analysis - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Journal of Mechanical Design Year : 2018

Tuned Nonlinear Energy Sink With Conical Spring: Design Theory and Sensitivity Analysis

Sébastien Seguy
Manuel Paredes

Abstract

This paper is devoted to the study of a Nonlinear Energy Sink (NES) intended to attenuate vibration induced in a harmonically forced linear oscillator (LO) and working under the principle of Targeted Energy Transfer (TET). The purpose motivated by practical considerations is to establish a design criterion that first ensures that the NES absorber is activated and second provides the optimally tuned nonlinear stiffness for efficient TET under a given primary system specification. Then a novel NES design yielding cubic stiffness without a linear part is exploited. To this end, two conical springs are specially sized to provide the nonlinearity. To eliminate the linear stiffness, the concept of a negative stiffness mechanism is implemented by two cylindrical compression springs. A small-sized NES system is then developed. To validate the concept, a sensitivity analysis is performed with respect to the adjustment differences of the springs and an experiment on the whole system embedded on an electrodynamic shaker is studied. The results show that this type of NES can not only output the expected nonlinear characteristics, but can also be tuned to work robustly over a range of excitation, thus making it practical for the application of passive vibration control.
Fichier principal
Vignette du fichier
18_jmd_hal.pdf (1.41 Mo) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-01819561 , version 1 (03-12-2018)

Identifiers

Cite

Donghai Qiu, Sébastien Seguy, Manuel Paredes. Tuned Nonlinear Energy Sink With Conical Spring: Design Theory and Sensitivity Analysis. Journal of Mechanical Design, 2018, 140 (1), pp.011404. ⟨10.1115/1.4038304⟩. ⟨hal-01819561⟩
154 View
310 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More