Analitical models of vibrational diagnostics of aerospase assigning shells

1Titova, ОA
1Zaporizhzhya National University, Zaporizhzhya, Ukraine
Kosm. nauka tehnol. 2002, 8 ;(Supplement1):054-056
Publication Language: Russian
Abstract: 
The oscillations of the closed circular cylinder shell with a crack on the outside surface of shell are considered. The shape of the shell oscillations is picked out depended on orientation and place of a crack position on the shell. The crack «breathes»: it is supposed, that during oscillations the influence of the crack is exhibited only in one of the semicycles of the oscillation period. The parameters of the shell oscillations are changed during this time interval. It is allowed to carry out the diagnostics.
References: 
1. Gontkevich V. S. Own oscillations of plates and shells. A Reference Guide, 288 p. (Naukova Dumka, Kiev, 1964) [in Russian].
2. Kubenko V. D., Koval’chuk P. S., Podchasov N. P. Nonlinear Oscillations of Cylindrical Shells, 208 p. (Vyshcha shkola, Kiev, 1989) [in Russian].
3. Roitman A. B. Longitudinal oscillations of an elastic cracked body. Reports of the National Academy of Sciences of Ukraine, No. 8, 65—68 (1999) [in Russian].

4. Roitman A. B., Titova O. A. Justification of analytical models for diagnosing “breathing” cracks in structural elements. Technical Diagnostics and Non-Destructive Testing, 3, 27—33 (2000) [in Russian].