Accession Number : AD0257476

Title :   ON THE PROPAGATION OF WAVES IN AN ELECTRO-MAGNETIC ELASTIC SOLID

Corporate Author : PURDUE UNIV LAFAYETTE IND

Personal Author(s) : DUNKIN,JOHN W. ; ERINGEN,A. CEMAL

Report Date : MAY 1961

Pagination or Media Count : 1

Abstract : The coupling of electromagnetic and elastic waves is considered from the standpoint of linear elasticity and a linearized electromagnetic theory. The problem of plane waves traveling through a uniform magnetostatic field is considered and couplings of the waves are studied. An investigation of the same problem for a uniform electrostatic field shows that the usual plane waves propagate without any change in their phase velocities but that the mechanical waves are accompanied by small fluctuating electromagnetic fields. The problem of the vibration of a free infinite elastic plate in a large magnetostatic field is examined under the assumption that the resulting electromagnetic fields are quasi-stationary. Frequency equations are obtained for both symmetric and antisymmetric vibrations and the damping caused by the field for both the first two symmetric and antisymmetric modes is obtained as a linear correction to the usual free plate frequencies. (Author)

Descriptors :   *ELECTROMAGNETIC RADIATION, *WAVE PROPAGATION, ELASTIC PROPERTIES, ELECTRIC FIELDS, ELECTROMAGNETIC FIELDS, ELECTROMAGNETISM, ELECTROSTATIC FIELDS, EQUATIONS, MAGNETIC FIELDS, MATHEMATICAL ANALYSIS, PARTIAL DIFFERENTIAL EQUATIONS, PROPAGATION, SOLID STATE PHYSICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE