Targeted energy transfer of a parallel nonlinear energy sink

  • Yimin Wei
  • Sha Wei
  • Qianlong Zhang
  • Xinjian Dong
  • Zhike PengEmail author
  • Wenming Zhang


A parallel nonlinear energy sink (NES) is proposed and analyzed. The parallel NES is composed of a vibro-impact (VI) NES and a cubic NES. The dynamical equation is given, and the essential analytical investigation is carried out to deal with the cubic nonlinearity and impact nonlinearity. Multiple time-scale expansion is introduced, and the zeroth order is derived to give a rough outline of the system. The underlying Hamilton dynamic equation is given, and then the optimal stiffness is expressed. The clearance is regarded as a critical factor for the VI. Based on the periodical impact treatment by analytical investigation, the relationships of the cubic stiffness, the clearance, and the zeroth-order attenuation amplitude of the linear primary oscillator (LPO) are obtained. A cubic NES under the optimal condition is compared with the parallel NES. Harmonic signals, harmonic signals with noises, and the excitation generated by a second-order filter are considered as the potential excitation forces on the system. The targeted energy transfer (TET) in the designed parallel NES is shown to be more efficient.

Key words

targeted energy transfer (TET) nonlinear energy sink (NES) nonlinear vibration absorber impact vibration reduction 

Chinese Library Classification


2010 Mathematics Subject Classification



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Copyright information

© Shanghai University and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Yimin Wei
    • 1
  • Sha Wei
    • 1
  • Qianlong Zhang
    • 1
  • Xinjian Dong
    • 1
  • Zhike Peng
    • 1
    Email author
  • Wenming Zhang
    • 1
  1. 1.State Key Laboratory of Mechanical System and VibrationShanghai Jiao Tong UniversityShanghaiChina

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