Electronic Journal Technical Acoustics ISSN 1819-2408

M. Badaeva, G. V. Udalov

Interaction of misaligned cylindrical surfaces through a gap between them, which is filled with liquid

language: Russian

received 15.08.2003, published 20.09.2003

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ABSTRACT

The dynamic interaction of misaligned cylindrical surfaces through a gap filled with liquid is analyzed. The purpose of this study is to estimate a possibility of using liquid element, bounded by cylindrical surfaces, in inertial channels of elastic-liquid vibroisolation systems. Such systems have two channels of dynamic forces transmission from the vibrating equipment to the supporting structure and provide increased vibroisolation efficiency in comparison to the classic elastic vibroisolators at low frequencies. The first elastic channel is common resilient vibroisolator and it can be characterized by stiffness. The main part of the second inertial channel is a liquid element, including gaps filled with liquid. It provides the inertial coupling between the vibrating equipment and the supporting structure and can be characterized by the dynamic interaction mass. Formulas for determination of liquid element dynamic characteristics are given. Dependencies of their values on the value and direction of cylindrical boundaries shift are obtained and compared with the same parameters of liquid element with coaxial boundaries. The influence of the axis shift on the vibroisolation efficiency is analyzed.

10 pages, 5 figures

Сitation: M. Badaeva, G. V. Udalov. Interaction of misaligned cylindrical surfaces through a gap between them, which is filled with liquid. Electronic Journal “Technical Acoustics”, http://www.ejta.org, 2003, 16.

REFERENCES

1. Генкин М. Д., Рябой В. М. Упругоинерционные виброизолирующие системы. Москва, «Наука». 1988.
2. Gennady V. Udalov. Passive method of compensating low-frequency dynamic forces generating by a vibrating equipment. Second International Shipbuilding Conference (ISC’98). Proceeding. St. Petersburg. 1998. Volume 2, pp. 96?99.
3. W. HasselBach. Apparatus for damping oscillations. Patent US 3578304 A.1971.
4. M. Badaeva. G. Udalov. The theoretical analysis of dynamic interaction of toroidal surfaces in liquid environment. 6-th International Symposium Transport Noise and Vibration. Proceeding.
St. Petersburg. 2002.
5. Янке Е., Эмде Ф, Леш Ф. Специальные функции. Москва. «Наука». 1968.

		Maria Badaeva — research fellow at Krylov Shipbuilding Research Institute. She is specialist on ships acoustics. Her scientific interests concern development of elastic-liquid vibroisolation systems, which have increased efficiency at low frequencies. She is co-author of the several articles and conference reports on this topic. e-mail: eeaa(at)online.ru
		Gennady Vladimirovich Udalov — expert in ships acoustics at Krylov Shipbuilding Research Institute. Doctor of technical sciences. Last years G. V. Udalov develops the theoretical and experimental foundations of the elastic-liquid vibroisolation systems. He is author of more than 40 articles, co-author of two monographs.