Nonlinear free vibrations of spider web structures

Tianyu Yang, Simiao Xu, Sakdirat Kaewunruen

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

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Abstract

Most research into natural spider web structures have considered only the small deformation theory based on small amplitude analysis. In reality, spider web structures, which are slender by nature, are more prone to large-amplitude load effects. This paper firstly presents a numerical study into large amplitude free vibrations of spider web structures. Highly coupled geometry and material nonlinearities have been formulated to establish the finite element models of spider web structures. Validation of the model has been carried out using previous research studies into spider web vibrations. Excellent agreement has been obtained for linear and nonlinear perturbation results. The validated FEM has been further extended to investigate the large amplitude effect on natural frequencies and corresponding mode shapes of highly-slender spider webs. Interestingly, this is the world first to report the dynamic softening and hardening phenomenon in the slender spider web structures. The insight into nonlinear dynamics of slender thin membrane skeleton structures can be used not only for better understanding the nature, but also for improving functionalities of defense technology using ultra-thin plates and shells.
Original languageEnglish
Title of host publicationProceedings of the 26th International Congress on Sound and Vibration
EditorsICSV26 Local Committee in Montreal
PublisherCanadian Acoustical Association
Number of pages8
ISBN (Print)978-1-9991810-0-0
Publication statusPublished - 8 Jul 2019
EventThe 26th International Congress on Sound and Vibration: ICSV26 - Montreal, Montreal, Canada
Duration: 7 Jul 201911 Jul 2019
http://icsv26.org/

Publication series

NameInternational Congress on Sound and Vibration Conference series
ISSN (Electronic)2329-3675

Conference

ConferenceThe 26th International Congress on Sound and Vibration
Abbreviated titleICSV26
Country/TerritoryCanada
CityMontreal
Period7/07/1911/07/19
Internet address

Keywords

  • large amplitude
  • free vibrations
  • nonlinear dynamics
  • spider web
  • membrane structures
  • biomechanics

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