Applied Mathematics and Mechanics (English Edition) ›› 2017, Vol. 38 ›› Issue (4): 527-542.doi: https://doi.org/10.1007/s10483-017-2184-6

• Articles • Previous Articles     Next Articles

Axial control for nonlinear resonances of electrostatically actuated nanobeam with graphene sensor

Canchang LIU1, Qian DING2, Qingmei GONG1, Chicheng MA1, Shuchang YUE1   

  1. 1. School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, Shandong Province, China;
    2. School of Mechanical Engineering, Tianjin University, Tianjin 300072, China
  • Received:2016-04-05 Revised:2016-08-09 Online:2017-04-01 Published:2017-04-01
  • Contact: Canchang LIU E-mail:sdutlcch@163.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 51275280 and 51575325)

Abstract:

The nonlinear resonance response of an electrostatically actuated nanobeam is studied over the near-half natural frequency with an axial capacitor controller. A graphene sensor deformed by the vibrations of the nanobeam is used to produce the voltage signal. The voltage of the vibration graphene sensor is used as a control signal input to a closedloop circuit to mitigate the nonlinear vibration of the nanobeam. An axial control force produced by the axial capacitor controller can transform the frequency-amplitude curves from nonlinear to linear. The necessary and sufficient conditions for guaranteeing the system stability and a saddle-node bifurcation are studied. The numerical simulations are conducted for uniform nanobeams. The nonlinear terms of the vibration system can be transformed into linear ones by applying the critical control voltage to the system. The nonlinear vibration phenomena can be avoided, and the vibration amplitude is mitigated evidently with the axial capacitor controller.

Key words: Schrödinger system, solitary wave, asymptotic solution, graphene sensor, nonlinear vibration, electrostatic force, nanobeam

2010 MSC Number: 

APS Journals | CSTAM Journals | AMS Journals | EMS Journals | ASME Journals