Title :
On the shear stress distribution between a functionally graded piezoelectric actuator and an elastic substrate and the reduction of its concentration
Author :
Yang, Jiashi ; Jin, Zhihe ; Li, Jiangyu
Author_Institution :
Dept. of Mech. Eng., Univ. of Maine, Orono, ME
fDate :
11/1/2008 12:00:00 AM
Abstract :
Recent advances in material processing technologies allow the production of piezoelectric materials with functionally graded material properties. We investigate the implications of functionally graded piezoelectric materials when used as actuators for structural control by examining the distribution of the actuating shear stress under a piezoelectric actuator of a functionally graded material (FGM) on an isotropic elastic half-space. It is shown that FGM materials can be used to adjust the shear stress distribution. In particular, the concentration near the edges of a conventional homogeneous piezoelectric actuator can be significantly reduced in an FGM actuator.
Keywords :
functionally graded materials; piezoelectric actuators; actuating shear stress; elastic substrate; functionally graded material properties; functionally graded piezoelectric actuator; isotropic elastic half-space; piezoelectric materials; shear stress distribution; structural control; Capacitive sensors; Educational programs; Integral equations; Laboratories; Mechanical engineering; Piezoelectric actuators; Piezoelectric films; Piezoelectric materials; Stress; Substrates; Acoustics; Computer Simulation; Computer-Aided Design; Elastic Modulus; Equipment Design; Equipment Failure Analysis; Micro-Electrical-Mechanical Systems; Models, Theoretical; Reproducibility of Results; Sensitivity and Specificity; Shear Strength; Stress, Mechanical; Transducers;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
