Two-Dimensional delayed resonator for entire vibration absorption

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00347337" target="_blank" >RIV/68407700:21220/21:00347337 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21730/21:00347337

Výsledek na webu

<a href="https://doi.org/10.1016/j.jsv.2021.116010" target="_blank" >https://doi.org/10.1016/j.jsv.2021.116010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jsv.2021.116010" target="_blank" >10.1016/j.jsv.2021.116010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Two-Dimensional delayed resonator for entire vibration absorption

Popis výsledku v původním jazyce

A one dimensional active vibration absorber with time delayed feedback known as delayed resonator proved to be well applicable for entire vibration absorption of mechanical structure at known excitation frequency. As the main and so far unique result, the delayed resonator concept is transferred from one dimensional to two dimensional vibration absorption. In the first step, an ideal two dimensional vibration absorber with three spring joints is designed with the three eigenfrequencies identical with the excitation frequency to be absorbed. Unlike in one dimensional case, the design imposes constraints on parameters of the two-dimensional absorber. In the second step, an active delayed position feedback is proposed at the three connecting joints with springs and dampers to turn a physical active absorber to the ideal uni-frequency absorber proposed in the first step. In particular, the task for the delayed feedback is to compensate the damping and virtually adjust the stiffness of the three active connecting elements. The proposed concept is analysed via frequency response of arising MIMO system as well as via spectral features of arising infinite-dimensional time delay system. The overall concept and design procedure are validated on a simulation case study.

Název v anglickém jazyce

Two-Dimensional delayed resonator for entire vibration absorption

Popis výsledku anglicky

A one dimensional active vibration absorber with time delayed feedback known as delayed resonator proved to be well applicable for entire vibration absorption of mechanical structure at known excitation frequency. As the main and so far unique result, the delayed resonator concept is transferred from one dimensional to two dimensional vibration absorption. In the first step, an ideal two dimensional vibration absorber with three spring joints is designed with the three eigenfrequencies identical with the excitation frequency to be absorbed. Unlike in one dimensional case, the design imposes constraints on parameters of the two-dimensional absorber. In the second step, an active delayed position feedback is proposed at the three connecting joints with springs and dampers to turn a physical active absorber to the ideal uni-frequency absorber proposed in the first step. In particular, the task for the delayed feedback is to compensate the damping and virtually adjust the stiffness of the three active connecting elements. The proposed concept is analysed via frequency response of arising MIMO system as well as via spectral features of arising infinite-dimensional time delay system. The overall concept and design procedure are validated on a simulation case study.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GA17-20943S" target="_blank" >GA17-20943S: Aktivní vícerozměrné hltiče vibrací složitých mechanických konstrukcí založené na metodě zpožděného rezonátoru</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Sound and Vibration

ISSN

0022-460X

e-ISSN

1095-8568

Svazek periodika

500

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

19

Strana od-do

—

Kód UT WoS článku

000637756200007

EID výsledku v databázi Scopus

2-s2.0-85102125763