新型液压球头轴承动态特性数字化建模方法  

Method for Digital Modeling of Dynamic Characteristics of New Hydraulic Spherical Bearing

作　　者：庆旭昆 员海玮[1] 丁镇军[2] QING Xukun;YUN Haiwei;DING Zhenjun(State Key Laboratory of Mechanics and Control of Aerospace Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Beijing Institute of Structure and Environment Engineering,Beijing 100076,China)

机构地区：[1]南京航空航天大学航空航天结构力学及控制全国重点实验室,江苏南京210016 [2]北京强度环境研究所,北京100076

出　　处：《机械制造与自动化》2025年第2期160-164,共5页Machine Building & Automation

摘　　要：为开展多维振动系统的虚拟化试验平台研究,需要获得液压球头轴承工作时的动态特性数学模型。通过对液压球头轴承进行流固耦合分析,研究油膜压力对轴承结构的影响并进行动态特性试验。基于试验结果,提出一种有限元模型简化方法,用于拟合液压球头轴承工作状态下的动态特性。通过与不同激励量级下的试验结果对比,验证了该方法的可行性。这个简化方法能够高效建立数学模型,满足多维振动系统虚拟化总体频响函数组装的需求。As developing a virtual testing platform for multi-dimensional vibration systems requires a mathematical model of the dynamic characteristics of a hydraulic ball head bearing during operation,this paper conducts fluid-structure coupling analysis on the hydraulic ball head bearing,investigates the influence of oil film pressure on the bearing structure and performs dynamic characteristic tests.Based on the test results,a simplified finite element model is proposed to fit the dynamic characteristics of the hydraulic ball head bearing during operation.The comparison with the experimental results on different excitation levels verifies the feasibility of the proposed method.The simplified method leads to the efficient establishment of a mathematical model which meets the requirements for assembling overall frequency response functions in the virtualization of multi-dimensional vibration systems.

关 键 词：液压球头轴承 流固耦合 模型简化 数字化建模 

分 类 号：TH133.3[机械工程—机械制造及自动化]