Modeling of power ultrasonic transducers
B. Dubus; P. Mosbah Institut d'Electronique de Microélectronique et de Nanotechnologie, Lille, France
Abstract
Ultrasonic devices modeling is often based on the finite element method (FEM). Several physical phenomena are involved in these devices: electromechanical transduction, transducer vibration, coupling with propagation medium, and acoustic or elastodynamic radiation. Generally, these models are based on linear constitutive relationships such as theory of elasticity, constitutive law of piezoelectricity, and theory of linear acoustics. For each case, basic equations, a theoretical formulation, and its discretization are developed. FEM, alone or coupled with other methods to model unbounded ...
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