Effects of Electro-Thermal Fields on Buckling of a Piezoelectric Polymeric Shell Reinforced with DWBNNTs

Document Type: Research Paper

Authors

Faculty of Mechanical Engineering, b Institute of Nanoscience & Nanotechnology,University of Kashan,Kashan, I.R.Iran.

10.7508/jns.2012.03.010

Abstract

Using  principle  of  minimum  total  potential  energy  approach  in conjunction  with  Rayleigh-Ritz  method,  the  electro-thermo- mechanical  axial  buckling  behavior  of  piezoelectric  polymeric cylindrical  shell  reinforced  with  double-walled  boron-nitride nanotube  (DWBNNT)  is  investigated. Coupling  between  electrical and mechanical  fields  are  considered  according  to  a  representative volume  element  (RVE)-based  micromechanical  model.  This  study indicates how buckling resistance of composite cylindrical shell may vary  by  applying  thermal  and  electrical  loads.  Also,  applying  the reverse voltage or decreasing  the  temperature,  increases  the critical axial buckling  load. This work showed that the piezoelectric BNNT enhances  on  the  whole  the  buckling  resistance  of  the  composite cylindrical shell.

Keywords