Smart Structures and Systems

  • 제25권1호
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  • Pages.57-64
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  • 2020
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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Experimental dynamic performance of an Aluminium-MRE shallow shell

  • Zhang, Jiawei (School of Electrical and Information Engineering, The University of Sydney) ;
  • Yildirim, Tanju (Research School of Electrical, Energy and Materials Engineering, College of Engineering and Computer Science, The Australian National University) ;
  • Neupane, Guru Prakash (Research School of Electrical, Energy and Materials Engineering, College of Engineering and Computer Science, The Australian National University) ;
  • Tao, Yuechuan (School of Electrical and Information Engineering, The University of Sydney) ;
  • Bingnong, Jiang (School of Mechanical and Mechatronic Engineering, University of Technology Sydney) ;
  • Li, Weihua (School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong)
  • 투고 : 2018.11.16
  • 심사 : 2019.09.06
  • 발행 : 2020.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

The nonlinear dynamics of a directly forced clamped-clamped-free-free magneto-rheological elastomer (MRE) sandwich shell has been experimentally investigated. Experiments have been conducted on an aluminium shallow shell (shell A) and an MRE-aluminium sandwich shallow shell with single curvature (shell B). An electrodynamic shaker has been used to directly force shells A and B in the vicinity of their fundamental resonance frequency; a laser displacement sensor has been used to measure the vibration amplitude to construct the frequency-response curves. It was observed that for an aluminium shell (shell A), that at small forcing amplitudes, a weak softening-type nonlinear behaviour was observed, however, at higher forcing amplitudes the nonlinear dynamical behaviour shifted and a strong hardening-type response occurred. For the MRE shell (shell B), the effect of forcing amplitude showed softening at low magnetic fields and hardening for medium magnetic fields; it was also observed the mono-curved MRE sandwich shell changed dynamics to quasiperiodic displacement at some frequencies, from a periodic displacement. The presence of a magnetic field, initial curvature, and forcing amplitude has significant qualitative and quantitative effects on the nonlinear dynamical response of a mono curved MRE sandwich shell.

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과제정보

연구 과제 주관 기관 : ARC Discovery

참고문헌

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