Simulation Investigation on Application of Powder Metallurgy Damping Effect in Water Hydraulic Pump

• Published in: MATEC Web of Conferences Vol. 153; p. 1003
• Main Authors: Shi, Weijie, Luo, Xiaohui, Zhang, Zuti, Wang, Huawei, Zhu, Yuquan
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01-01-2018
• Subjects: Composite materials; Computational fluid dynamics; Computer simulation; Continuity equation; Damping; Darcys law; Film thickness; Finite volume method; Fluid flow; Lubrication; Metallurgical analysis; Porosity; Porous materials; Powder metallurgy; Reynolds equation; Tribology; Water film
• ISSN: 2261-236X; 2274-7214; 2261-236X
• DOI: 10.1051/matecconf/201815301003

Over the years, the hydrostatic balance slipper is often used to make the hydraulic lubrication film formed between the swash plate and the slipper. In this paper, a slipper containing the powder metallurgy (PM) composite material is proposed. The porous characteristics have an automatic damping effect, which can improve the tribological characteristics of the slipper. Based on the Reynolds equation, porous Darcy law and continuity equation, a lubrication model of PM damper is proposed to analyze the damping effect of PM in this paper. The proposed model is calculated using the finite volume method to capture the water film characteristics. Effects of length, diameter and porosity of the PM damper on the water film thickness are investigated. The results show that the water film can be formed by adopting the PM damper. In order to ensure the slipper with PM damper to form hydrostatic support, the length, diameter and porosity of PM damper is recommended to be 5 mm, 8 mm and 0.7, respectively.