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Effect of Bonding on the Performance of Segmented Piezoceramic Actuators

Matthew W. Ballas

Department of Mechanical, Industrial and Manufacturing Engineering, Northeastern University, Boston, MA 02115

The deflection of various single-joint segmented piezoelectric actuators under the influence of an applied electric field is simulated in 2D. Two geometries are considered, both based on a simple cantilever beam configuration: Case 1 involves joining the individual actuators end-to-end while in Case 2, they are joined face-to-face. The effect of various ceramic-to-joint modulus ratios (y) on the maximum and tip displacements is investigated. In Case 1, it was determined that yplays a significant role in the overall curvature of the actuator but has very little effect on the tip displacement. Case 2 showed that a loweryresults in a larger average tip displacement while y? 5 causes severe distortions at the free end of the actuator.

Journal of Intelligent Material Systems and Structures, Vol. 10, No. 11, 920-929 (1999)
DOI: 10.1106/BRFX-B1H4-UG2B-6BQT


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