TY - JOUR
T1 - Modeling and identification of electro-elastic nonlinearities in ultrasonic power transfer systems
AU - Meesala, Vamsi C.
AU - Hajj, Muhammad R.
AU - Shahab, Shima
N1 - Publisher Copyright:
© 2019, Springer Nature B.V.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - We establish a nonlinear non-conservative mathematical framework for the acoustic-electro-elastic dynamics of the response of a piezoelectric disk to high-level acoustic excitation in the context of ultrasound acoustic energy transfer. Nonlinear parameter identification is performed to estimate the parameters representing nonlinear piezoelectric coefficients. The identification is based on exploiting the vibrational response of the disk operating in the thickness mode under dynamic actuation. The nonlinearly coupled electro-elastic governing equations, for the piezoelectric receiver subjected to acoustic excitation, are derived using the generalized Hamilton’s principle. The method of multiple scales is used to obtain an approximate solution that forms the basis for parameter identification. The identified coefficients are then experimentally validated. The effects of varying these coefficients on the nonlinear response, optimal resistive electrical loading, and power generation characteristics of the receiver are investigated.
AB - We establish a nonlinear non-conservative mathematical framework for the acoustic-electro-elastic dynamics of the response of a piezoelectric disk to high-level acoustic excitation in the context of ultrasound acoustic energy transfer. Nonlinear parameter identification is performed to estimate the parameters representing nonlinear piezoelectric coefficients. The identification is based on exploiting the vibrational response of the disk operating in the thickness mode under dynamic actuation. The nonlinearly coupled electro-elastic governing equations, for the piezoelectric receiver subjected to acoustic excitation, are derived using the generalized Hamilton’s principle. The method of multiple scales is used to obtain an approximate solution that forms the basis for parameter identification. The identified coefficients are then experimentally validated. The effects of varying these coefficients on the nonlinear response, optimal resistive electrical loading, and power generation characteristics of the receiver are investigated.
KW - Contactless power transfer
KW - Material nonlinearity
KW - Method of multiple scales
KW - Optimal resistive electrical loading
KW - Piezoelectric materials
KW - Ultrasound acoustic energy transfer
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U2 - 10.1007/s11071-019-04959-x
DO - 10.1007/s11071-019-04959-x
M3 - Article
AN - SCOPUS:85065158136
SN - 0924-090X
VL - 99
SP - 249
EP - 268
JO - Nonlinear Dynamics
JF - Nonlinear Dynamics
IS - 1
ER -