液压与气动2025，Vol.49Issue(5)：81-88,8.DOI:10.11832/j.issn.1000-4858.2025.05.010
高转速轴向柱塞泵柱塞-滑靴组件的动力特性分析
Dynamic Characteristics Analysis of the Piston-slipper Assembly in High-speed Axial Piston Pumps
摘要
Abstract
In response to the failure issues of the piston-slipper ball joint in high-speed axial piston pumps,dynamic characteristic analysis of the piston-slipper assembly is systematically conducted.Piston cavity dynamics model of the piston-slipper pair is established.The pressure variation within the piston chamber is analyzed by using computational fluid dynamics simulations.Subsequently,the interaction forces between the piston and slipper are quantified through multi-body dynamics simulation.Finally,the augmented Lagrangian method integrated with the steady-state structural analysis module of finite element software is employed to evaluate the deformation and stress distribution in both components.The results reveal that with increasing the load pressure,swash plate angle,and rotational speed leads to elevated negative pressure in the piston cavity,higher discharge pressure,and amplified interaction forces within the piston-slipper assembly.The maximum stress reach 80.4 MPa and deformation of the piston is 0.0213 mm respectively.For the slipper,the peak stress(168.4 MPa)and deformation(0.0057 mm)are localized at its closure.These findings provide critical insights for optimizing the design of piston-slipper ball joints in high-speed axial piston pumps.关键词
轴向柱塞泵/柱塞/滑靴/有限元分析/强度校核Key words
axial piston pump/piston/slipper/finite element analysis/strength check分类
机械工程引用本文复制引用
龙运伟,陈溪奉,邵雪嵩,贠振刚,李少年..高转速轴向柱塞泵柱塞-滑靴组件的动力特性分析[J].液压与气动,2025,49(5):81-88,8.基金项目
国家自然科学基金项目(52165006) （52165006）
