摘要
针对轴向柱塞泵柱塞副由于接触造成的磨损问题,建立了柱塞副油膜弹性流体动压润滑数值仿真模型,在此基础上分析了柱塞在缸体孔内微运动轨迹及柱塞与缸体接触状态.提出了柱塞微深度倒角的结构改进措施,通过仿真对比了不同尺寸倒角对接触程度的影响.结果表明:微深度倒角有利于减少柱塞与缸体孔的接触,倒角深度对减少接触的作用比倒角长度更加明显;所提出的数值模型和改进措施有利于实现柱塞泵的优化设计,通过降低柱塞副的磨损最终提高柱塞泵的寿命和可靠性.
To solve the wear between piston and cylinder due to contact,the elastohydrodynamic numerical model of oil film on piston was established and the micro motion of piston was studied to analyse the contact status between piston and cylinder. Micro-depth chamfering was introduced to realize the structural optimization design. The impact of different size chamfering on piston contact status was compared.The results show that micro-depth chamfering is beneficial to reduce the contact between the plunger and the cylinder and the chamfering depth has more obvious effect than the chamfering length.The numerical model and optimization measures proposed in this paper has the potential to realize the optimal design of the piston pump and improve its service life and reliability by reducing the wear of the piston and cylinder.
作者
王克龙
姜继海
汪泽波
孙毅
WANG Kelong;JIANG Jihai;WANG Zebo;SUN Yi(School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China;Beijing Institute of Precision Mechatronics and Controls,Beijing 100076,China)
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2019年第6期46-51,共6页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51275123)
国家科技支撑计划资助项目(2014BAF08B06)
国家重大科技成果转化项目
关键词
轴向柱塞泵
柱塞副
弹流润滑
微形貌
油膜润滑
axial piston pump
piston/cylinder interface
elastohydrodynamic lubrication
micro shape
oil film lubrication
