Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (8): 1103-1110.DOI: 10.12068/j.issn.1005-3026.2020.08.007

• Mechanical Engineering • Previous Articles     Next Articles

Application of Non-smooth NES in Vibration Suppression of Rotor-Blade Systems

CAO Yan-bo, LI Zhi-ao, HAN Jin-chao, YAO Hong-liang   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2019-09-17 Revised:2019-09-17 Online:2020-08-15 Published:2020-08-28
  • Contact: YAO Hong-liang
  • About author:-
  • Supported by:
    -

Abstract: The vibration of the rotor-blade system is suppressed by a non-smooth nonlinear energy sink (NSNES) with piecewise linear stiffness beams. Firstly, the structure and working principle of the NSNES are introduced, and then the dynamic model of rotor-blade-NSNES system is established by using the Lagrange equation. Finally, the numerical method is used to analyze the NSNES ability to suppress the vibration of rotor and blade when the coupled system is in steady state resonance. Under the given parameters, the inhibition rate of the NSNES attached to the tip of the blade on rotor vibration can reach 68%, and the inhibition rate on blade vibration can reach 62%. The NSNES vibration suppression capability is compared with the vibration damping capability of a linear dynamic vibration absorber with the same mass as the NSNES.

Key words: rotor-blade system, non-smooth NES, steady-state vibration, vibration suppression

CLC Number: