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Volume 14 (2019) : Issue 3, Mar

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The Journal of Engineering

Synergy of surface textures on a hydraulic cylinder piston

Content Provider	IET Digital Library
Author	Zhang, Ying Zeng, Liangcai Wu, Zhenpeng Ding, Xianzhong Chen, Kuisheng
Abstract	This paper explores the synergy mechanisms that are associated with the coexistence of multiple textures, to improve the precision control of a hydraulic servo cylinder. Based on the classical Reynolds equation, it establishes a single-texture and a nine-texture model to compare and study the synergy of surface textures. The film thickness is obtained under different working conditions for 1 N. Based on this parameter, it compares the simulation results from the two models with the experimental results to determine if the friction coefficient is reduced when multiple textures exist. When multiple textures exist, the inlet pressures of the central texture increase, but the peak pressure and cavitation pressure decrease. The synergy of the textures acts as an ‘average pressure’ and causes the pressure to decrease, which directly decreases the shear force. As the area ratio of the texture increases, the beneficial effect from the synergy gradually increases and then decreases, which implies that there is an optimum area ratio. The depth of the texture was 10 μm and the optimum depth-to-diameter ratio was 0.009. When the speed increases for a light load, the oil film thickness increases. However, this phenomenon does not substantially change the synergistic effect.
Starting Page	424
Ending Page	429
Page Count	6
Volume Number	14
e-ISSN	17500443
Issue Number	Issue 4, Apr (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/mnl/14/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/mnl.2018.5535
Journal	Micro & Nano Letters
Publisher Date	2019-04-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Aerodynamics Applied Fluid Mechanics Cavitation Cavitation Pressure Decrease Central Texture Increase Design Engineering Engineering Material Fluid Mechanics Friction Hydraulic Cylinder Piston Hydraulic Servo Cylinder Hydraulic System Hydrodynamics Image Texture Inlet Lubrication Machine Bearings Mechanical Component Mechanical Engineering Multiple Textures Nine-texture Model Numerical Approximation And Analysis Oil Film Thickness Increases Outlet Pressures Pistons Servomechanisms Single-texture Size 10.0 Mum Surface Texture Surface Textures Synergy Mechanisms Texture Texture Increases Tribology
Content Type	Text
Resource Type	Article

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