衬套参数对柱塞泵柱塞副油膜特性的影响分析  

Influence analysis of parameters of bushing on oil film characteristics of piston/bushing interface in hydraulic piston pump

作　　者：朱希玲 张玉华 ZHU Xiling;ZHANG Yuhua(School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Johnson&Johnson Medical(China)Ltd.,Shanghai 200245,China)

机构地区：[1]上海工程技术大学,机械与汽车工程学院,上海201620 [2]强生(中国)医疗器材有限公司,上海200245

出　　处：《上海工程技术大学学报》2024年第1期38-43,共6页Journal of Shanghai University of Engineering Science

摘　　要：为改善液压柱塞泵中柱塞副的磨损状况,建立流固耦合模型,求解流体域与固体域的相互作用。考虑柱塞变形和缸体孔衬套变形,讨论不同弹性模量的铜合金衬套材料和不同厚度的衬套对衬套变形和油膜厚度的影响。结果表明,衬套变形值随衬套材料弹性模量增加而减小,采用弹性模量小的铜合金衬套材料或适当增加衬套厚度能使油膜厚度增大,可以改善柱塞副润滑条件,延长柱塞泵的使用寿命。不同弹性模量的铜合金衬套材料和不同厚度的衬套对油膜厚度影响明显。研究结果为柱塞泵的优化设计提供一定的参考。To better the wear condition of the piston/bushing interface,the fluid-structure model was created,the interaction between fluid domain and solid domain was studied,the elastic deformations of the piston and bushing were considered,the impact of different thickness of bushing and material with different elastic moduli on the film thickness and deformations of bushing was discussed.The results show that the deformations of bushing decrease with increasing modulus of elasticity,bushing of copper lining materials with smaller elastic modulus or increasing of thicknesses of the bushing properly can improve lubrication conditions of the piston/bushing interface and the service life of the piston pump.Elastic deformations of piston and bushing have significant influences on the film thickness.The results provide a reference for the optimization design of the piston pumps.

关 键 词：弹性变形 柱塞泵 流固耦合 衬套厚度 

分 类 号：TH137.51[机械工程—机械制造及自动化]