| Summary: | 碩士 === 國立成功大學 === 工程科學系 === 102 === In the thesis, the behavior of the cantilevered Timoshenko beam, whose surface is partially mounted with piezoelectric material and adhesive layer, subjected to an external force and applied voltage is studied. The charge equation of piezoelectric material is included in the study. The shape functions of one element of the entire beam are obtained by solving the equations of static equilibrium with nodal displacements of the element. Then, the finite element approach is adopted to set up the coupling equations of the motion of the entire beam and induced voltage on the piezoelectric material. To suppress the vibration of the entire beam, a resistor is inserted to connect two surfaces of the piezoelectric material. The Newmark’s scheme is adopted to analyze the behavior of the entire system. An external voltage apply at the actuator and an external force apply at the free end of the entire beam will be studied. The effects of the location, length and thickness of the piezoelectric material and thickness of the adhesive layer on deflection, torsion angle, collecting electric charge and the damping are investigated.
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