Energy exchange and localization in a modular metastructure under impulsive excitation

Z. Wu, R. L. Harne, K. W. Wang

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

Abstract

Recent investigations on the concept of modular metastructures have demonstrated remarkable adaptivity of properties as a synergistic product of assembling together metastable modules, modules that exhibit coexisting states for the same topology. It has been found that such modularity provides an accessible pathway for unprecedented massive property adaptation. Despite the extensive report on the static or quasistatic characteristics of modular metastructures, much remains to be explored regarding their dynamic characteristics. This research initiates the study on transient response of a modular metastructure under impulsive excitation. Numerical studies characterize the adaptability of energy exchange and localization characteristics afforded by metastable states. It is found that responses of internal bistable masses of the metastable modules play an important role in determining energy distribution of the overall system. It is discovered that low internal bistable mass and high impulsive energy level are beneficial for energy to be localized and dissipated internally. Additionally, mechanism behind effective energy absorption is disclosed. Overall, this investigation provides opportunities to tailor dynamical responses using modular metastructures and opens potential avenues for designing transient vibration absorbers.

Original languageEnglish (US)
Title of host publicationActive and Passive Smart Structures and Integrated Systems 2016
EditorsGyuhae Park
PublisherSPIE
ISBN (Electronic)9781510600409
DOIs
StatePublished - 2016
EventActive and Passive Smart Structures and Integrated Systems 2016 - Las Vegas, United States
Duration: Mar 21 2016Mar 24 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9799
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceActive and Passive Smart Structures and Integrated Systems 2016
CountryUnited States
CityLas Vegas
Period3/21/163/24/16

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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