Theoretical Disquisition on the Static and Dynamic Characteristics of an Adaptive Stepped Hydrostatic Thrust Bearing with a Displacement Compensator

Stepped hydrostatic thrust bearings used in metal-cutting machines are characterized by high load capacity and damping, which ensure the stable operation of structures. However, in comparison with throttle thrust bearings, they have a high compliance. It is preferable that, in addition to the main b...

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Autores principales:	Vladimir Kodnyanko, Andrey Kurzakov, Olga Grigorieva, Maxim Brungardt, Svetlana Belyakova, Ludmila Gogol, Alexey Surovtsev, Lilia Strok
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	stepped hydrostatic thrust bearing adaptive function displacement compensator load characteristics compliance lubricant flow rate Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/47e2463e7c0349068cbeff867c37dafb
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spelling	oai:doaj.org-article:47e2463e7c0349068cbeff867c37dafb2021-11-25T18:17:27ZTheoretical Disquisition on the Static and Dynamic Characteristics of an Adaptive Stepped Hydrostatic Thrust Bearing with a Displacement Compensator10.3390/math92229492227-7390https://doaj.org/article/47e2463e7c0349068cbeff867c37dafb2021-11-01T00:00:00Zhttps://www.mdpi.com/2227-7390/9/22/2949https://doaj.org/toc/2227-7390Stepped hydrostatic thrust bearings used in metal-cutting machines are characterized by high load capacity and damping, which ensure the stable operation of structures. However, in comparison with throttle thrust bearings, they have a high compliance. It is preferable that, in addition to the main bearing function, a modern hydrostatic bearing has the ability to provide low (including negative) compliance for the implementation of an adaptive function in order to actively compensate for the deformation of the machine resilient system, thereby increasing the accuracy of metalworking. This paper considers the design of a stepped hydrostatic thrust bearing, which, in order to reduce the compliance to negative values, features a technical improvement consisting of the use of an active displacement compensator on an elastic suspension. In this paper, the results of mathematical modeling and theoretical research of stationary and non-stationary modes of operation of the adaptive thrust bearing are presented. The possibility of a significant reduction in the static compliance of the structure, including the negative compliance values, is shown. It was found that negative compliance is provided in a wide range of loads, which can be up to 80% of the range of permissible bearing loads. The study of the dynamic characteristics showed that with a targeted selection of parameters that ensure optimal performance, the adaptive thrust bearing is able to operate stably in the entire range of permissible loads. It has been established that an adaptive stepped hydrostatic thrust bearing with a displacement compensator has a high stability margin, sufficient to ensure its operability when implementing the adaptive function.Vladimir KodnyankoAndrey KurzakovOlga GrigorievaMaxim BrungardtSvetlana BelyakovaLudmila GogolAlexey SurovtsevLilia StrokMDPI AGarticlestepped hydrostatic thrust bearingadaptive functiondisplacement compensatorload characteristicscompliancelubricant flow rateMathematicsQA1-939ENMathematics, Vol 9, Iss 2949, p 2949 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	stepped hydrostatic thrust bearing adaptive function displacement compensator load characteristics compliance lubricant flow rate Mathematics QA1-939
spellingShingle	stepped hydrostatic thrust bearing adaptive function displacement compensator load characteristics compliance lubricant flow rate Mathematics QA1-939 Vladimir Kodnyanko Andrey Kurzakov Olga Grigorieva Maxim Brungardt Svetlana Belyakova Ludmila Gogol Alexey Surovtsev Lilia Strok Theoretical Disquisition on the Static and Dynamic Characteristics of an Adaptive Stepped Hydrostatic Thrust Bearing with a Displacement Compensator
description	Stepped hydrostatic thrust bearings used in metal-cutting machines are characterized by high load capacity and damping, which ensure the stable operation of structures. However, in comparison with throttle thrust bearings, they have a high compliance. It is preferable that, in addition to the main bearing function, a modern hydrostatic bearing has the ability to provide low (including negative) compliance for the implementation of an adaptive function in order to actively compensate for the deformation of the machine resilient system, thereby increasing the accuracy of metalworking. This paper considers the design of a stepped hydrostatic thrust bearing, which, in order to reduce the compliance to negative values, features a technical improvement consisting of the use of an active displacement compensator on an elastic suspension. In this paper, the results of mathematical modeling and theoretical research of stationary and non-stationary modes of operation of the adaptive thrust bearing are presented. The possibility of a significant reduction in the static compliance of the structure, including the negative compliance values, is shown. It was found that negative compliance is provided in a wide range of loads, which can be up to 80% of the range of permissible bearing loads. The study of the dynamic characteristics showed that with a targeted selection of parameters that ensure optimal performance, the adaptive thrust bearing is able to operate stably in the entire range of permissible loads. It has been established that an adaptive stepped hydrostatic thrust bearing with a displacement compensator has a high stability margin, sufficient to ensure its operability when implementing the adaptive function.
format	article
author	Vladimir Kodnyanko Andrey Kurzakov Olga Grigorieva Maxim Brungardt Svetlana Belyakova Ludmila Gogol Alexey Surovtsev Lilia Strok
author_facet	Vladimir Kodnyanko Andrey Kurzakov Olga Grigorieva Maxim Brungardt Svetlana Belyakova Ludmila Gogol Alexey Surovtsev Lilia Strok
author_sort	Vladimir Kodnyanko
title	Theoretical Disquisition on the Static and Dynamic Characteristics of an Adaptive Stepped Hydrostatic Thrust Bearing with a Displacement Compensator
title_short	Theoretical Disquisition on the Static and Dynamic Characteristics of an Adaptive Stepped Hydrostatic Thrust Bearing with a Displacement Compensator
title_full	Theoretical Disquisition on the Static and Dynamic Characteristics of an Adaptive Stepped Hydrostatic Thrust Bearing with a Displacement Compensator
title_fullStr	Theoretical Disquisition on the Static and Dynamic Characteristics of an Adaptive Stepped Hydrostatic Thrust Bearing with a Displacement Compensator
title_full_unstemmed	Theoretical Disquisition on the Static and Dynamic Characteristics of an Adaptive Stepped Hydrostatic Thrust Bearing with a Displacement Compensator
title_sort	theoretical disquisition on the static and dynamic characteristics of an adaptive stepped hydrostatic thrust bearing with a displacement compensator
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/47e2463e7c0349068cbeff867c37dafb
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Theoretical Disquisition on the Static and Dynamic Characteristics of an Adaptive Stepped Hydrostatic Thrust Bearing with a Displacement Compensator

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