Numerical study on a rotational hydraulic damper with variable damping coefficient

Abstract The rotational hydraulic damper has advantages in the design and control of rotational machines. This paper presents a novel hydraulic rotational damper with the characteristic of adjusting the damping coefficient. It is composed of a shell, a gap, a rotor shaft, sliding vanes, a valve, and...

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Autores principales:	Huiyong Zhao, Baohua Wang, Genfu Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ce314629c82448cfb8407224968995d9
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spelling	oai:doaj.org-article:ce314629c82448cfb8407224968995d92021-11-21T12:24:24ZNumerical study on a rotational hydraulic damper with variable damping coefficient10.1038/s41598-021-01859-22045-2322https://doaj.org/article/ce314629c82448cfb8407224968995d92021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01859-2https://doaj.org/toc/2045-2322Abstract The rotational hydraulic damper has advantages in the design and control of rotational machines. This paper presents a novel hydraulic rotational damper with the characteristic of adjusting the damping coefficient. It is composed of a shell, a gap, a rotor shaft, sliding vanes, a valve, and a motor, just like a combination of a sliding pump system and a valve driven by a motor. A new cam ring slot designed to guide the radial motion of sliding vanes could reduce friction resistance force, which will also benefit the design of the sliding pump. The damping coefficient model of this damper is established based on dynamic analysis. Series of numerical simulations validate the impact of factors on the damping coefficient. Frictional resistances have little influence on the damping coefficient during most conditions. The total coefficient is positively correlative with the angular velocity and the valve angle. Therefore, changing the valve angle according to the rotor shaft’s angular speed could adjust the damping coefficient.Huiyong ZhaoBaohua WangGenfu ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Huiyong Zhao Baohua Wang Genfu Chen Numerical study on a rotational hydraulic damper with variable damping coefficient
description	Abstract The rotational hydraulic damper has advantages in the design and control of rotational machines. This paper presents a novel hydraulic rotational damper with the characteristic of adjusting the damping coefficient. It is composed of a shell, a gap, a rotor shaft, sliding vanes, a valve, and a motor, just like a combination of a sliding pump system and a valve driven by a motor. A new cam ring slot designed to guide the radial motion of sliding vanes could reduce friction resistance force, which will also benefit the design of the sliding pump. The damping coefficient model of this damper is established based on dynamic analysis. Series of numerical simulations validate the impact of factors on the damping coefficient. Frictional resistances have little influence on the damping coefficient during most conditions. The total coefficient is positively correlative with the angular velocity and the valve angle. Therefore, changing the valve angle according to the rotor shaft’s angular speed could adjust the damping coefficient.
format	article
author	Huiyong Zhao Baohua Wang Genfu Chen
author_facet	Huiyong Zhao Baohua Wang Genfu Chen
author_sort	Huiyong Zhao
title	Numerical study on a rotational hydraulic damper with variable damping coefficient
title_short	Numerical study on a rotational hydraulic damper with variable damping coefficient
title_full	Numerical study on a rotational hydraulic damper with variable damping coefficient
title_fullStr	Numerical study on a rotational hydraulic damper with variable damping coefficient
title_full_unstemmed	Numerical study on a rotational hydraulic damper with variable damping coefficient
title_sort	numerical study on a rotational hydraulic damper with variable damping coefficient
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ce314629c82448cfb8407224968995d9
work_keys_str_mv	AT huiyongzhao numericalstudyonarotationalhydraulicdamperwithvariabledampingcoefficient AT baohuawang numericalstudyonarotationalhydraulicdamperwithvariabledampingcoefficient AT genfuchen numericalstudyonarotationalhydraulicdamperwithvariabledampingcoefficient
_version_	1718419032378441728

Numerical study on a rotational hydraulic damper with variable damping coefficient

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