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.
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)
出处
《上海工程技术大学学报》
CAS
2024年第1期38-43,共6页
Journal of Shanghai University of Engineering Science
关键词
弹性变形
柱塞泵
流固耦合
衬套厚度
elastic deformations
piston pump
fluid-structure interaction
thickness of bushing
