RT Journal Article
A1 Yuan Liu
A1 Feng Wang
A1 Dedong Han

PB iet
T1 Parameters design for a non-linear absorber based on phase trajectory analysis
JN The Journal of Engineering
VO 2019
IS 13
SP 323
OP 327
AB The performance of non-linear absorbers for suppression of the structure vibrations depends on the setting of the absorbers' parameters to a certain extent. A slowly varying dynamical system under investigation in the existing work is comprised of a linear oscillator coupled with an attached non-linear absorber called non-linear energy sink (NES). Slowly varying equations of the coupled system are achieved first by using the complex averaging method, and trajectory features of the slowly varying system are analysed. On that basis, the non-linear cubic stiffness design method is proposed. Considering that different damping coefficients of the NES impose a large impact on both system energy transfer and energy dissipation between the main structure and the NES, necessary damping conditions for the targeted energy transfer (TET) are obtained by using the phase trajectory analysis. With the proposed method, structure parameters of the NES are designed to get maximum absorbing effects. Finally, all these conclusions about parameters design for the NES are verified by simulation analysis. The simulation results demonstrate that the optimal vibration reduction effectiveness can be achieved with reasonably designed stiffness and damping.
K1 linear oscillator
K1 absorbers
K1 targeted energy transfer
K1 parameters design
K1 phase trajectory analysis
K1 coupled system
K1 system energy transfer
K1 energy dissipation
K1 structure parameters
K1 TET
K1 nonlinear cubic stiffness design method
K1 slowly varying dynamical system
K1 NES
K1 nonlinear absorber
K1 nonlinear energy sink
DO https://doi.org/10.1049/joe.2018.9039
UL https://digital-library.theiet.org/;jsessionid=4evo2i1r2mih7.x-iet-live-01content/journals/10.1049/joe.2018.9039
LA English
SN
YR 2019
OL EN