Accession Number : AD0600329

Title :   A DYNAMICAL THEORY OF POLAR ELASTIC DIELECTRICS.

Descriptive Note : Technical rept. no. 25,

Corporate Author : PURDUE UNIV LAFAYETTE IND SCHOOL OF AERONAUTICS ASTRONAUTICS AND ENGINEERING SCIENCES

Personal Author(s) : Dixon,Roy C. ; Eringen,A. Cemal

Report Date : APR 1964

Pagination or Media Count : 89

Abstract : Basic axioms of the theory of continuous media are employed to obtain the field equations, jump conditions, and constitutive equations of a polar elastic dielectric subject to large deformations and electromagnetic fields. The theory is dynamical and includes such polar effects as stress moments and electric quadrupole moments. Electromechanical interaction forces and their energies are calculated by assuming a distributed Lorentz force on the bound charges within the volume element. The conservation of mass, balance of momenta, conservation of energy, Faraday's, Ampere's and Gauss' laws are then postulated in integral form, from which the field equations and jump conditions are obtained systematically. An equation of entropy production is given which is used to derive a nondissipative constitutive theory. For the dissipative system there is given a properly invariant second order constitutive theory with its special forms. (See also AD-412 690) (Author)

Descriptors :   (*DIELECTRICS, CONTINUUM MECHANICS), (*CONTINUUM MECHANICS, DIELECTRICS), FIELD THEORY, DEFORMATION, ELECTROMAGNETIC FIELDS, STRESSES, QUADRUPOLE MOMENT, INTEGRAL EQUATIONS, ENTROPY, MECHANICAL WAVES, ELASTIC PROPERTIES, SHEAR STRESSES

Distribution Statement : APPROVED FOR PUBLIC RELEASE