employee
Lugansk, Russian Federation
employee
Lugansk, Russian Federation
BBK 344 Общее машиностроение. Машиноведение
Study purpose is to develop a generalized algorithm for studying dynamic processes during the operation of spindles and other equipment with gasostatic bearings using machine-building CAD tools. The following tasks are solved: analyzing dynamic processes during the operation of equipment, selecting software for studying stiffness and bearing capacity, and then studying vibrations of an unbalanced rotor with gasostatic bearings, performing computer calculating experiments (CCE) in accordance with the developed methodology, presenting the results graphically and analyzing them. Research method include computer calculating experiments in CAE-programs of machine-building CAD. The novelty of the work is in the developed generalized algorithm for studying dynamic processes by conducting computer calculating experiments based on a three-dimensional computational model; in the obtained functional dependencies for the pressure of a gas lubricant and the amplitudes of temperature fluctuations on various parameters and conditions. There are study results of the pressure distribution of air lubrication in conical gasostatic bearings of a high-speed spindle under varying external loads, as well as the amplitude of transverse vibrations of an unbalanced rotor during accelerating and passing three critical rotational speeds at which the phenomenon of resonance occurs. Conclusions: the developed algorithm of computer calculating experiments based on a three-dimensional computational model allows studying accurately the dynamic processes that occur during the operation of spindles using machine-building CAD systems; the presented algorithm is universal, therefore, it can be used to study physical processes during the operation of equipment for various purposes; the use of this algorithm allows obtaining the results necessary to make new technical facilities without conducting numerous field tests, which significantly reduces the time and cost of research and development work.
experiment, processes, equipment, bearings, vibrations, lubrication, CAD
1. Breshev VE. Development of theory and design methods of contactless type drives with combined and passive stability assurance: monograph. Lugansk: Publishing House of Lugansk Vladimir Dahl State University; 2016.
2. Brian Rowe W. Hydrostatic, aerostatic, and hybrid bearing design. Oxford; 2012.
3. Wiley J. Air Bearings. Theory, design and applications. Farid Al-Bender KU Leuven, Department of Mechanical Engineering Leuven. Belgium; 2021.
4. Kosmynin AV, Vinogradov VS. Gas bearings of high-speed turbo drives of metalworking equipment. Vladivostok: Dalnauka; 2002.
5. Kosmynin AV. Bearings with gas lubrication of high–speed rotors. Modern High Technologies [Internet]. 2009 [cited 2024 Oct 08];1. Available from: http://www.rae.ru/snt/?section=article_index
6. Pinegin SV, Orlov AV, Tabachnikov YuB. Precision swing supports and supports with gas lubrication: handbook. Moscow: Mashinostroenie; 1984.
7. Breshev VE. Theory of mechanisms and machines. Analysis and synthesis of mechanisms: textbook. Lugansk: Publishing House of Lugansk Vladimir Dahl State University; 2024.
8. Alyamovsky AA. SolidWorks 2007/2008. Computer modeling in engineering. St. Petersburg: BHV-Petersburg; 2008.
9. Breshev VE, Dolzhenko YuS. Computer c alculating experiments to study the characteristics of the gas-static bearing of the grinding machine spindle. Bulletin of Lugansk Vladimir Dahl State University. 2024;2(80):28-34.
10. Yang J. Modeling and analysis of a high-speed spindle with hybrid bearings considering the influence of bearing parameters. Mechanical Systems and Signal Processing. 2009;130:262-279.
11. Breshev VE, Dolzhenko YuS. Computational experiments for studying dynamic stability of a high-speed spindle of gas-static bearings. Progressive Technologists and Machine Building Systems: Collection of Scientific Papers of XXXI NTC, Sept 16-22, 2024; Mechanical Engineering and Technosphere of the XXI century; Sevastopol. Moscow: DonNTU Publishing House. 2024;2(85):31-40.
12. Alfutov NA, Kolesnikov KS. Stability of motion and equilibrium: textbook for university students. 2nd ed. Moscow: MSTU; 2003.
