A Piezothermoelastic Shell Theory Applied to Active Structures
Abstract
'Smart' structures with integrated sensors, actuators, and control electronics are of importance to next-generation high-performance structural systems. Piezoelectric materials possess unique electromechanical properties, the direct and converse effects. which can be used in sensor and actuator applications. In this study, piezothermoelastic characteristics of piezoelectric shell continua are studied and applications of the theory to active structures in sensing and control are discussed. A generic piezothermoelastic shell theory for thin piezoelectric shells is derived using the linear piezoelectric theory and Kirchhoff-Love assumptions. It shows that the dynamic equations, in three principal directions, include thermal induced loads as well as conventional electric and mechanical loads. The electric membrane forces and moments induced by the converse effect can be used to control the thermal and mechanical loads. A simplification procedure, based on Lame's parameters and radii of curvatures, is proposed and applications of the theory to 1) a piezoelectric cylindrical shell and 2) a piezoelectric beam are demonstrated.... Smart structures, Piezoelectricity, Distributed sensor/actuator
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1992
- Accession Number
- ADA266713
Entities
People
- H. S. Tzou
- R. V. Howard
Organizations
- University of Kentucky