The Coupling Structure Modal Analysis of PVDF Piezoelectric Wafer Oscillator

PVDF piezoelectric materials are widely used because of its good performance, but the structure of this material is thinner, and there exits the shear locking problems when analyzing force electric coupling, therefore, the basic research of piezoelectric properties also has certain limitations. In order to solve the above problems, this paper introduced the idea that makes a coupled modal analysis on PVDF by finite element analysis with ANSYS, and chooses a piezoelectric coupled finite element unit analysis as SOLID5. After exerting the corresponding coupling constraints, this paper gets a variety of modal frequencies and mode shapes, and it shows that this method solves the coupling problems. To some extent it provides the basis for the structure design of PVDF sensor, to avoid a specific frequency vibration or resonance vibration.