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Dissipative effects of the interaction of crystal lattice surface with medium
Author(s) -
Ya. Vetrov S.,
Shabanov V. F.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221400110
Subject(s) - dissipative system , dissipation , aperiodic graph , vibration , condensed matter physics , thermoelastic damping , surface wave , crystal (programming language) , mechanics , materials science , lattice (music) , crystal structure , classical mechanics , physics , optics , thermal , chemistry , thermodynamics , crystallography , acoustics , mathematics , programming language , combinatorics , computer science
The processes of dissipation due to the crystal interaction of lattice with medium are taken into account using the friction forces. The methods of discrete lattice dynamics shows that the dissipative forces induce surface waves of new type which penetrate deeper to crystal and damp weaker than the waves existing without dissipation. The possibilities to discover and use the obtained surface vibrations are considered. Besides it is shown, that the accounted dissipation leads to essential modification of known surface waves: their frequency and damping is renormed, penetration to crystal decreases, at intensive enough dissipation the surface waves become aperiodic surface motions of different types. The estimations of surface vibration damping are given for contacts of crystal with gas and liquid.