Journal
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
Volume 26, Issue 10, Pages 3047-3057Publisher
KOREAN SOC MECHANICAL ENGINEERS
DOI: 10.1007/s12206-012-0816-6
Keywords
Nonlinear nonlocal vibration; Micro smart composite plate; DWBNNTs; Pasternak foundation; DQM
Categories
Funding
- University of Kashan [65475/13]
- Iranian Nanotechnology Development Committee
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In the present paper, electro-thermo nonlinear vibration of a piezo-polymeric rectangular micro plate made from polyvinylidene fluoride (PVDF) reinforced by zigzag double walled boron nitride nanotubes (DWBNNTs) is studied. This plate is embedded in an elastic medium which is simulated by Winkler and Pasternak foundation models. Using nonlinear strain-displacement relations and nonlocal elasticity plate theory as well as considering charge equation for coupling between electrical and mechanical fields, the motion equations are derived based on energy method and Hamilton's principle. The differential quadrature method (DQM) is employed to computation of nonlinear frequency for different mechanical and free-free electrical boundary conditions. The results indicate that smart composite and consequently the generated F improved sensor and actuator applications in several process industries, because it increases the nonlinear vibration frequency. Furthermore, it can be also found that the nonlinear frequency increases as the values of the elastic medium constants, the geometrical aspect ratios and DWBNNTs volume fraction increase but it decreases as nonlocal parameter increases.
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