
Accession Number : AD0650562
Title : STRAIN WAVES IN A 6CONSTANT CUBIC CRYSTAL,
Corporate Author : RENSSELAER POLYTECHNIC INST TROY N Y DEPT OF MECHANICS
Personal Author(s) : Paul,H. S. ; Hoppmann,W. H. , II
Report Date : APR 1967
Pagination or Media Count : 29
Abstract : The analysis is concerned with wave propagation in a 6constant centrosymmetric cubic crystal. Plane waves propagating in the directions (1,1,1), (l,m=l,n) and (l,m,0) are studied. Vibrational waves in an infinite prism are considered. An attempt has been made to analyze the vibration of a cube. It is found that some of the boundary conditions are unsatisfied. But this difficulty can be overcome by considering an infinite thick plate. Vibrational waves in an infinite thick plate bounded by two planes of symmetry are investigated. It may be mentioned that the analysis for the waves in (1,1,0) directions will be similar to that of the third problem. The lowest symmetric and antisymmetric modes of waves in cubic crystalline plates are discussed. Both modes change to surface modes whenever surface modes are possible along the direction of propagation. (Author)
Descriptors : (*CRYSTALS, PROPAGATION), MECHANICAL WAVES, EQUATIONS OF MOTION, VIBRATION, BOUNDARY VALUE PROBLEMS
Subject Categories : Crystallography
Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE