期刊
COMPOSITE STRUCTURES
卷 94, 期 6, 页码 2038-2047出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2012.01.023
关键词
Piezoelectric materials; Nonlinear vibration; Nonlocal theory; Nanobeams; Size effect
资金
- National Natural Science Foundation of China [11002019]
- Ph.D. Programs Foundation of Ministry of Education of China [20100009120018]
- Fundamental Research Funds for the Central Universities [2009JBM073]
This paper investigates the nonlinear vibration of the piezoelectric nanobeams based on the nonlocal theory and Timoshenko beam theory. The piezoelectric nanobeam is subjected to an applied voltage and a uniform temperature change. The nonlinear governing equations and boundary conditions are derived by using the Hamilton principle and discretized by using the differential quadrature (DQ) method. A direct iterative method is employed to determine the nonlinear frequencies and mode shapes of the piezoelectric nanobeams. A detailed parametric study is conducted to study the influences of the nonlocal parameter, temperature change and external electric voltage on the size-dependent nonlinear vibration characteristics of the piezoelectric nanobeams. (C) 2012 Elsevier Ltd. All rights reserved.
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