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2017, 2

D. Stepanenko, A. Yemelyanova, M. Pleskatch, N. Solodkaya

Theoretical validation of possibility of ultrasonic vibrations’ amplification by means of compound annular elastic elements

language: Russian

received 25.02.2017, published 19.04.2017

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ABSTRACT

The article provides theoretical validation of possibility of ultrasonic vibrations’ amplification by means of compound annular elastic elements consisting of two annular segments made of materials with different values of elastic modulus. The main advantages of amplifiers based on annular elastic elements in comparison with bar ultrasonic horns are simplicity of fabrication and small dimensions and weight. Method of calculation of annular amplifiers’ natural frequencies and modal shapes based on singular value decomposition is considered. Numerical example of design of annular amplifier with gain factor K = 1,53 is given. It is shown that, as in the case of compound bar horns, amplification is achieved when vibrations are introduced in segment with higher value of elastic modulus.
Key words: ultrasonic, vibrations amplification, annular amplifier

13 pages, 4 figures

Сitation: D. Stepanenko, A. Yemelyanova, M. Pleskatch, N. Solodkaya. Theoretical validation of possibility of ultrasonic vibrations’ amplification by means of compound annular elastic elements. Electronic Journal “Technical Acoustics”, http://www.ejta.org, 2017, 2.

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Dmitry Stepanenko, PhD, Assoc. Prof. Graduated from the Belarusian national technical university (Minsk, Republic of Belarus), Department of instrumental engineering, Instrument-making faculty in 2004. Scientific interests: applications of low-frequency ultrasound in engineering and medicine, methods of design of low-frequency ultrasonic vibratory systems.
E-mail: stepd(at)tut.by

 
 

Anna Yemelyanova, student, Belarusian national technical university (Minsk, Republic of Belarus)

 
 

Mariya Pleskatch, student, Belarusian national technical university (Minsk, Republic of Belarus)

 
 

Nadezhda Solodkaya, student, Belarusian national technical university (Minsk, Republic of Belarus)