INDUCED STRAIN OF ACTUATION OF SURFACE BONDED PIEZOCERAMIC PATCHES - A NUMERICAL AND EXPERIMENTAL-STUDY

被引：8

作者：

MOLLENHAUER, DH ^{[1
]}

GRIFFIN, OH ^{[1
]}

机构：

[1] VIRGINIA POLYTECH INST & STATE UNIV,DEPT ENGN SCI & MECH,BLACKSBURG,VA 24061

来源：

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES | 1994年 / 5卷 / 03期

关键词：

Actuators - Bonding - Finite element method - Interferometry - Mathematical models - Numerical analysis - Strain - Stress analysis - Surfaces - Thermal expansion;

D O I：

10.1177/1045389X9400500308

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The induced strain of actuation of surface bonded piezoceramic patches was examined using numerical and experimental techniques. Specifically, a commercially available finite element package was used to examine these induced strains. The piezoceramic patches were actuated in the model via a specified thermal expansion or contraction dependent on the free e-field/strain response of the piezoceramic patches. Moire interferometry was used to examine the induced strains on the plate surface near-to and far-from a patch edge. These experimental results compare favorably with the numerical results, indicating that the numerical approach is a valid analysis technique. Results indicate relatively large in-plane and out-of-plane tensile stresses as well as large shear stresses in the regions surrounding a patch edge. These large stresses are not statically significant but will likely cause long term fatigue problems.

引用

页码：355 / 362

页数：8