Experimental targeted energy transfer to a rotary nonlinear energy sink

Sean A. Hubbard, D. Michael McFarland, Lawrence Bergman, Alexander F Vakakis

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

Abstract

We study passive and nonlinear targeted energy transfers induced by resonant interactions between a single-degree-of-freedom nonlinear energy sink and a flexible swept wing. With a series of ground vibration tests, we show that the nonlinear energy sink can be designed to quickly and efficiently absorb energy from one or more wing modes in a completely passive manner. Results indicate that it is feasible to use such a device to suppress or prevent aeroelastic instabilities like limit-cycle oscillations. The design of a compact nonlinear energy sink is introduced and the parameters of the device are examined experimentally, confirming that the required nonlinearizable stiffness is achieved. Ground vibration experiments performed on the wing-nonlinear energy sink system indicate that targeted energy transfer is achievable resulting in a significant reduction in the second bending mode response of the wing.

Original languageEnglish (US)
Title of host publication51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
StatePublished - Dec 16 2010
Event51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Orlando, FL, United States
Duration: Apr 12 2010Apr 15 2010

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Other

Other51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityOrlando, FL
Period4/12/104/15/10

ASJC Scopus subject areas

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Hubbard, S. A., McFarland, D. M., Bergman, L., & Vakakis, A. F. (2010). Experimental targeted energy transfer to a rotary nonlinear energy sink. In 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference [2010-3045] (Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference).