Smart Structures and Systems

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Analytical model of shape memory alloy embedded smart beam, under actuated condition

  • Veeraragu, Jagadeesh (Department of Mechanical Engineering, PSG college of Technology) ;
  • Mani, Yuvaraja (Department of Mechanical Engineering, PSG college of Technology) ;
  • Janakiraman, M. (Department of Mechanical Engineering, PSG college of Technology)
  • Received : 2020.06.16
  • Accepted : 2021.01.27
  • Published : 2021.06.25
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Abstract

Vibration characteristics of actuated Shape Memory Alloy (SMA) embedded smart composite beam are studied and it is extended to reduce the impact of resonance in cantilever beams. Smart composite beam with SMA embedded at neutral layer is studied for its vibrational characteristics under martensite and austenite conditions. The smart beam is developed as a analytical model incorporating the change in Young's modulus and damping factor under martensite and austenite conditions of SMA. The variation of natural frequency and damping are evaluated and verified with experimentation at different volume fraction of SMA. The thermo elastic nature of SMA and GFRP incorporated in the numerical model depicts the shift in natural frequency of 10% and reduction in magnification factor of 50% under actuation conditions. The frequency response of the smart beam depicts the capability of SMA in active vibration control and improvement of the structural health of composite beam. The thermo mechanical analytical model derived can be utilized to optimize the volume fraction of SMA to be embedded. The study can be extended to optimize actuation current to minimize the effect of resonance.

Keywords

Acknowledgement

The authors would like to acknowledge Ministry of New and Renewable Energy (MNRE) India and PSG college of technology who have supported at various stages of this reported work.

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