Numerical Analysis of Nonlinear and Controlled Electro-Mechanical Transducers
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Short product lifetime cycles, fast time to market and cost reduction as well as an increasing technical complexity are only some of the challenges developers of electromechanical transducers are faced with. Since the fabrication of prototypes and experimental based design is a lengthy and costly process, the need for appropriate numerical simulation tools arises. While linear numerical simulation used for sensor and actuator design is nowadays state of the art, high power actuators are still developed in manner of experimental trial and error. At low frequencies, as occurring in smart structure applications or positioning systems, controlled nonlinear amplifiers are used to overcome the power limitations of the transducers due to nonlinearity. This method is not applicable for piezoelectric transducers used for generating high intensity ultrasound due to the high frequencies used. Nonlinear effects have to be considered during the design process and therefore, simulation tools capable to analyze the complex interactions of different nonlinearities are necessary.
KeywordsElectric Field Strength Piezoelectric Transducer Material Tensor Ferroelectric Polarization High Intensity Ultrasound
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