Vibrational energy transfer between nonlinearly coupled oscillators

Baiyang Shi, Jian Yang, Chendi Zhu, Zhuang Dong

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

This paper investigates the vibration energy transmission between coupled oscillators via their coupling interface, which is characterized by Duffing-type stiffness nonlinearities. Both analytical approximations based on the method of averaging and numerical integrations are employed to obtain the steady-state response and to determine the vibration transmission level. Time-averaged power flow transmission is formulated and used as an index to measure the amount of vibration transmission. It is found that hardening stiffness nonlinearity at the interface can lead to higher vibration power transmission at higher excitation frequencies. In contrast, softening stiffness nonlinearity at the coupling interface can result in higher vibration transmission at lower excitation frequencies. It is also found that the stiffness nonlinearity has a significant effect on vibration transmission in the vicinity of resonant frequency. These findings lead to better understanding of vibration energy transmission mechanisms of nonlinear systems and thus can facilitate enhanced designs of their coupling interfaces for vibration mitigation.

Original languageEnglish
Title of host publication25th International Congress on Sound and Vibration 2018, ICSV 2018
Subtitle of host publicationHiroshima Calling
PublisherInternational Institute of Acoustics and Vibration, IIAV
Pages3180-3185
Number of pages6
ISBN (Electronic)9781510868458
Publication statusPublished - 2018
Event25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018 - Hiroshima, Japan
Duration: 8 Jul 201812 Jul 2018

Publication series

Name25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling
Volume5

Conference

Conference25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018
Country/TerritoryJapan
CityHiroshima
Period8/07/1812/07/18

Keywords

  • Nonlinear interface
  • Vibrational energy transfer

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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