摘要
针对轴向柱塞泵法兰与壳体之间的螺栓连接结构研究,建立了柱塞泵有限元模型并通过模态试验与振动响应试验对模型进行验证。在此基础上,围绕螺栓的安装位置、安装半径、数量及尺寸四个设计参数,系统分析不同连接配置对模态频率与振动响应的影响规律。同时,采用正交试验设计方法,评估各参数对振动特性的影响显著性。研究结果表明:螺栓的对称布置有助于提高部分阶次的模态频率并抑制结构振动,模态频率最大提升12.7%,振动速度最大降低21.5%;螺栓安装半径对振动特性的影响较小;螺栓尺寸增大会提高模态频率,但对振动抑制效果有限;增加螺栓数量可显著提升模态频率并降低振动速度,模态频率最大提升10.7%,振动速度最大降低36.1%。正交分析结果进一步表明,螺栓安装位置与数量对柱塞泵模态特性和振动响应的影响最为显著,其次为螺栓尺寸,安装半径的影响最小。
This study focuses on the bolted connection structure between the pump flange and the housing,and establishes a finite element model of the piston pump.The model is validated through both modal analysis experiments and vibration response experiments.Based on the validated model,the influence of four design parameters—bolt position,installation radius,bolt quantity,and bolt size—on modal frequencies and vibration responses is systematically analyzed.The results indicate that a symmetrical bolt arrangement increases certain modal frequencies by up to 12.7%and reduces vibration velocity by up to 21.5%.The installation radius has a relatively minor effect on vibration characteristics.An increase in bolt size leads to higher modal frequencies,but has limited effectiveness in suppressing vibration.Increasing the number of bolts significantly improves the modal frequencies,with a maximum increase of 10.7%,and reduces vibration velocity by as much as 36.1%.An orthogonal experimental design is used to evaluate the relative significance of each parameter.The analysis confirms that bolt position and bolt quantity have the most substantial impact on the modal characteristics and vibration response of the piston pump.Bolt size has a moderate influence,while installation radius has the least effect.
作者
赖荣燊
刘帅
叶绍干
鲍岳
夏小松
刘万山
LAI Rongshen;LIU Shuai;YE Shaogan;BAO Yue;XIA Xiaosong;LIU Wanshan(School of Mechanical and Automotive Engineering,Xiamen University of Technology,Xiamen,Fujian 361024;Pen-Tung Sah Institute of Micro-Nano Science and Technology,Xiamen University,Xiamen,Fujian 361021;School of Aerospace Engineering,Xiamen University,Xiamen,Fujian 361021)
出处
《液压与气动》
北大核心
2026年第2期1-10,共10页
Chinese Hydraulics & Pneumatics
基金
国家自然科学基金(U24B2049,52175062)
福建省自然科学基金(2024J09013)。
关键词
轴向柱塞泵
螺栓连接结构
振动特性
参数设计
正交试验
axial piston pump
bolted connection structure
vibration characteristics
parameters design
orthogonal experimental
