Title :
Analytical modeling of the variation in apparent d33 piezoelectric coefficient measured by the direct quasistatic method as a function of sample aspect ratio
Author :
Barzegar, Abdolghaffar ; Damjanovic, D. ; Setter, N.
Author_Institution :
Ceramic Laboratory, Swiss Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
In this study we present an analytical model in which apparent (measured) d33 is a function of the aspect ratio, the mechanical properties of the contacts and the properties of piezoelectric ceramics. Using derived relations it is possible to obtain the true value of d33 in the wide range of boundary conditions. The analytical results are compared with simulations using finite element modeling (FEM) and with experimental data, and good correlation is found among them. Effect of the geometry of the contacts used to apply the force and collect the piezoelectric charge from the sample on apparent d33 value is specifically addressed.
Keywords :
finite element analysis; mechanical contact; piezoceramics; stress-strain relations; aspect ratio; contacts; direct quasistatic method; finite element modeling; geometry; mechanical properties; piezoelectric ceramics; piezoelectric charge; piezoelectric coefficient; Analytical models; Boundary conditions; Ceramics; Ferroelectric materials; Finite element methods; Geometry; Laboratories; Mechanical factors; Mechanical variables measurement; Piezoelectric materials;
Conference_Titel :
Applications of Ferroelectrics, 2004. ISAF-04. 2004 14th IEEE International Symposium on
Print_ISBN :
0-7803-8410-5
DOI :
10.1109/ISAF.2004.1418394
