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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">donstu</journal-id><journal-title-group><journal-title xml:lang="en">Advanced Engineering Research (Rostov-on-Don)</journal-title><trans-title-group xml:lang="ru"><trans-title>Advanced Engineering Research (Rostov-on-Don)</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2687-1653</issn><publisher><publisher-name>Don State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.23947/1992-5980-2017-17-4-5-13</article-id><article-id custom-type="elpub" pub-id-type="custom">donstu-177</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MECHANICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МЕХАНИКА</subject></subj-group></article-categories><title-group><article-title>Effect of geometric and physical parameters on resonant frequencies of ultrasonic vibrations of elastic and piezoelectric element system</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние геометрических и физических параметров на резонансные частоты ультразвуковых колебаний системы упругих и пьезоэлектрических элементов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Скалиух</surname><given-names>Александр Сергеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Skaliukh</surname><given-names>Alexander S.</given-names></name></name-alternatives><email xlink:type="simple">a.s.skaliukh@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Герасименко</surname><given-names>Татьяна Евгеньевна</given-names></name><name name-style="western" xml:lang="en"><surname>Gerasimenko</surname><given-names>Tatyana E.</given-names></name></name-alternatives><email xlink:type="simple">tegerasimenko@sfedu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Оганесян</surname><given-names>Павел Артурович</given-names></name><name name-style="western" xml:lang="en"><surname>Oganesyan</surname><given-names>Pavel A.</given-names></name></name-alternatives><email xlink:type="simple">paul.oganesyan@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соловьева</surname><given-names>Анна Аркадиевна</given-names></name><name name-style="western" xml:lang="en"><surname>Solovieva</surname><given-names>Anna A.</given-names></name></name-alternatives><email xlink:type="simple">solovievarc@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Южный федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southern Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>13</day><month>07</month><year>2018</year></pub-date><volume>17</volume><issue>4</issue><fpage>5</fpage><lpage>13</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Skaliukh A.S., Gerasimenko T.E., Oganesyan P.A., Solovieva A.A., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Скалиух А.С., Герасименко Т.Е., Оганесян П.А., Соловьева А.А.</copyright-holder><copyright-holder xml:lang="en">Skaliukh A.S., Gerasimenko T.E., Oganesyan P.A., Solovieva A.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.vestnik-donstu.ru/jour/article/view/177">https://www.vestnik-donstu.ru/jour/article/view/177</self-uri><abstract><p>Introduction. Resonance frequencies of the longitudinal oscillations are investigated for a system consisting of diverse geometrical and physical elements - piezoceramic, elastic, and acoustic ones. The results are compared in COMSOL and ACELAN packages. The dependence of the first eigenfrequency value on the geometric parameters is evaluated. The dynamic viscosity effect on the longitudinal oscillations FRF is studied. Materials and Methods. The system of elastic and acoustic elements which allows describing the operation of an ultrasonic cutting device is selected for the study. The oscillator is a piezoelectric transducer which oscillates in thickness. An oscillation concentrator and a rod element are specified as elastic elements. They are made from stainless steel. The cutting element simulator is acoustic fluid. Modal and harmonic analysis of a complex system consisting of diverse physical elements is carried out. Research Results . Axisymmetric and three-dimensional finite-element models of the investigated system are constructed. Various types of curvature and thickness of the link with changeable surface shape are proposed for the oscillation concentrator. The first eigenfrequencies of the longitudinal vibrations of the rod element contacting with the acoustic liquid are obtained. Good agreement with the results of the ACELAN finite-element package is established. The amplitude-frequency characteristics of the end oscillations near the first resonance frequency are obtained. It is notable that the acoustic medium viscosity has little effect on the oscillation amplitude of the elastic rod, and does not affect the resonance frequency at all. Discussion and Conclusions . Harmonic and modal analysis has shown that the high-frequency longitudinal vibrations of the rod element depend significantly on the dissipation factor of the elastic elements, and depend weakly on the viscosity of the contacting acoustic medium. The results obtained may be of interest under designing ultrasonic cutting medical devices.</p></abstract><trans-abstract xml:lang="ru"><p>Введение. Исследованы резонансные частоты продольных колебаний системы, состоящей из цепочки разных по геометрическим и физическим параметрам элементов: пьезокерамического, упругих и акустического. Проведено сравнение результатов в пакетах COMSOL и ACELAN. Оценена зависимость значения первой собственной частоты от геометрических параметров. Исследовано влияние динамической вязкости на АЧХ продольных колебаний. Материалы и методы. Для исследования выбрана система упругих и акустических элементов, позволяющая описывать работу ультразвукового режущего устройства. Возбудителем колебаний выступает пьезокерамический преобразователь, совершающий колебания по толщине. Концентратор колебаний и стержневой элемент принимаются в качестве упругих элементов и выполнены из нержавеющей стали. Имитатором режущего элемента выступает акустическая жидкость. Проведен модальный и гармонический анализ сложной системы, состоящей из разных по физическим свойствам элементов. Результаты исследования. Построены осесимметричная и трехмерная конечноэлементные модели исследуемой системы. Для концентратора колебаний предложены различные виды кривизны и толщины звена с изменяемой формой поверхности. Получены первые собственные частоты продольных колебаний стержневого элемента, контактирующего с акустической жидкостью. Установлено хорошее согласие с результатами работы конечноэлементного пакета ACELAN. Получены амплитудно-частотные характеристики колебаний концевой части вблизи первой резонансной частоты. Отмечено, что вязкость акустической среды мало влияет на амплитуду колебаний упругого стержня и совсем не влияет на резонансную частоту. Обсуждение и заключения. Гармонический и модальный анализ показал, что высокочастотные продольные колебания стержневого элемента значительно зависят от тангенса угла потерь упругих элементов и слабо зависят от вязкости контактирующей акустической среды. Полученные результаты могут представлять интерес при конструировании ультразвуковых режущих медицинских приборов.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метод конечных элементов</kwd><kwd>пьезоэлектрический преобразователь</kwd><kwd>ультразвуковой скальпель</kwd><kwd>амплитудно-частная характеристика</kwd><kwd>finite-element method</kwd><kwd>piezoelectric transformer</kwd><kwd>harmonic scalpel</kwd><kwd>frequency-response analysis</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Лощилов, В. И. К вопросу о механизме ультразвуковой резки биологических тканей / В. И. Лощилов, С. М. 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