TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








FEM-based calculation and operation analysis of padded piezoceramic rod



Full text article ( in russian)

Year

 
2019

Issue

 
20192

Volume

 
2

Pages

 
263-268

Caption

 
FEM-based calculation and operation analysis of padded piezoceramic rod

Authors

 
Ermolaev B.V., Machov V.I.

Keywords

 
hydroacoustic transducer, piezoceramic rod, pad bending, FE simulation, vibration amplitude, frequency characteristic.

DOI

 
10.24937/2542-2324-2019-2-S-I-263-268

Summary

 
Rod-shaped electroacoustic transducers are widely used in various hydroacoustic systems thanks to their high efficiency, one-way propagation of emitted/received signal and possibility of optimal array configuration. Vibrations of these rods are calculated by means of the expressions mostly obtained for uni-dimensional approximation that takes into account characteristics size (i.e. length) of the rod. A thin metal pad rigidly fixed to the end of piezoceramic rod increases the efficiency of sound emission/reception, but this pad may bend, which would deteriorate its operational efficiency. This study is a FE vibration analysis of padded piezoceramic rod. FE simulation of compound rod gives a better representation of its complex vibrations taking into account both longitudinal and radial vibration of the rod itself and bending of its pad. It became possible thanks to visualization of displacement amplitudes for oscillatory system parts. The simulation has shown that pad bending probability grows along with diameter ratio of the pad and the rod. If rear part of the pad is conical, pad bending occurs at higher diameters of pad surface.

Back to the list



 





 
Login:
Password:
Register
Forgot your password?


Last issues

All rights reserved © Krylov state research centre, 2020


ISSN (print) 2542-2324 / ISSN (online) 2618-8244

Address: Moskovskoye shosse, 44, Saint-Petersburg, 196158

Phone: +7(812) 415-49-80