| Summary: | 碩士 === 逢甲大學 === 機械工程學系 === 88 === Although many methods are known for the analysis of piezoelectric materials and their applications, not much analytical work has been done in the field of one-dimensional piezoelectric sensors and actuators. It is the purpose of this thesis to present a general and simple approach for examining the electromechanical responses of piezoelectric materials. In this thesis, piezoelectric sensors/actuators are initially modeled as an engineering beam in which stresses and electric fields are taken as independent variables in the piezoelectric constitutive equations. In case of the beam excited by electromechanical and/or electric input, the general solutions for electromechanical responses of piezoelectric sensors/actuators are acquired in closed forms. In terms of analyzing PZT-4 and PIC-151 materials, numerical results of the proposed formulation are compared with those of ANSYS and ESPI experimental data. It is shown that numerical results of the proposed formulation correlate well with ANSYS as well as experimental results regarding frequencies. Finally, the proposed formulation is successfully extended to investigate piezoelectric laminated plates composite laminates.
|
|---|
