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

Ghorbanpour Arani, A.; Shams, S.; Amir, S.; Khoddami Maraghi, Z.

doi:10.7508/jns.2012.03.010

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

Document Type : Research Paper

Authors

A. Ghorbanpour Arani

S. Shams

S. Amir

Z. Khoddami Maraghi

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

Axial buckling

Boron nitride nanotube

energy method

Electro-thermo-mechanical loadings