Piezothermoelastic modelling of laminated composite beam with embedded smart materials - A finite element approach

Raja, S and Naganarayana, BP and Rohwer, K (1998) Piezothermoelastic modelling of laminated composite beam with embedded smart materials - A finite element approach. In: European Conference on Spacecraft Structures, Materials and Mechanical Testing, 4-6 Nov 1998, Braunschweig, Germany.

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Abstract

The finite element procedures are developed to model the piezothermoelastic behavior of a piezoelectric laminated composite beam. Mechanical, thermal, and electric fields are coupled through constitutive equations which are assumed linear within the application range. The thermodynamic potential energy is expressed by electric enthalpy for the coupled system. Minimization of the total thermodynamic potential energy leads to a set of governing differential equations. First-order shear deformation theory of laminated structures is employed in the finite element formulation. The mechanics include the contributions from elastic, thermoelastic, piezoelectric, dielectric, pyroelectric, and heat conduction components. The inclusion of electric potential and temperature as state variables in finite element formulation permits a unified representation of multiple fields coupling behavior. Extensive numerical studies are carried out to assess the performance of the element for mechanical, electrical, and thermal load cases.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Electric enthalpy;Finite element formulation
Subjects: MATHEMATICAL AND COMPUTER SCIENCES > Mathematical and Computer Scienes(General)
MATHEMATICAL AND COMPUTER SCIENCES > Numerical Analysis
Division/Department: Structures Division, Structures Division, Structures Division
Depositing User: M/S ICAST NAL
Date Deposited: 22 Sep 2006
Last Modified: 24 May 2010 09:50
URI: http://nal-ir.nal.res.in/id/eprint/2747

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