Elements Of The Applied Theory Of Elastic Vibration | Ya. Panovko
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Author: Ya. Panovko
Added by: mirtitles
Added Date: 2020-05-03
Publication Date: 1971
Language: English
Subjects: mir books, mir publishers, engineering, structures, analysis, mechanics, elesticity, free vibrations, forced vibrations, rotors, shafts, parametric vibrations, frictional vibrations
Collections: mir-titles, additional collections
Pages Count: 300
PPI Count: 300
PDF Count: 1
Total Size: 80.06 MB
PDF Size: 4.71 MB
Extensions: epub, pdf, gz, zip, torrent
Downloads: 2K
Views: 52
Total Files: 13
Media Type: texts
Description
We may distinguish at least the following live sufficiently independent categories of vibratory processes differing in their nature:
free vibrations, i.e., vibrations which are performed by a mechanical system having no energy supply from outside if the system is disturbed from its position of equilibrium and then released;
critical states of rotating shafts and rotors which consist in a sudden increase in the deflections of their axes at definite speeds of rotation (or in definite ranges of speeds);
forced vibrations which result when the mechanical system is acted on by fluctuating external forces (driving forces);
parametric vibrations caused by periodic variations of the para meters of a system (for example, its stiffness);
self-excited vibrations, i.e., vibratory processes which are maintained by constant sources of energy of a non-vibratory nature.
Each of these categories of vibratory processes is discussed in the appropriate chapter.
