Comparative Analysis of Vibrations of Ring-Shaped Ultrasonic Concentrators

The paper provides a comparative analysis of the influence ring concentrator shape in ultrasonic systems on their amplitude-frequency characteristics. Devices are known which elastic elements used either as resonators or working tools technological systems. However, use concentrators vibrations is insufficiently studied and requires comprehensive research development recommendations for practical application. For this purpose, theoretical has been carried out while using ANSYS computer program, made it possible to perform modal harmonic models with various shapes. round nominal outer diameter 50 mm variable cross-section. Three have analyzed: one model two oval shape. To conduct identify frequencies at resonance occurs, vibration characteristics rings considered frequency range from 1 26 kHz. Results show that, depending forced vibrations, bending formed rings, act different coordinate planes. In case, change accompanied by amplitude vibrations. most intense along vertical axis achieved circular rings. It found that an increase oscillations, number oscillation periods observed. If region low only one-period mode ring, then increases three. All several natural certain periodicity planes intensity directions depends Examples variations shapes demonstrated paper.