水润滑轴承振动噪声分析及实验研究∗

摘要

A finite element model of a water-lubricated bearing at low speeds,and heavy loads was es-tablished.The Explicit module of Abaqus was used to analyze the influence regularity of transient per-formance on the water-lubricated bearing with different friction factors,loadings and revolving speeds,and the vibrational frequency and acceleration RMS of the bearing were obtained.Finally,the results were val-idated with experiments.The results have indicated that the stability of the system reduces and more vi-brational noises rise with the increase in friction coefficient,the vibration response of the bearing system increases with the increase in loading within a certain range,but there is less impact from revolving speeds on the vibration frequency of the bearing.However,the accelerated speed of the system is getting higher with the increase of revolving speed,and the simulation analysis results are consistent with the experiment results,and it provides a theoretical basis for the study of the vibrational noise mechanism of water-lubri-cated bearings.%建立低速重载条件下水润滑轴承有限元模型，应用 Abaqus /Explicit 模块分析不同摩擦系数、载荷、转速对水润滑轴承瞬态特性的影响规律，确定轴承的振动频率和振动加速度有效值，并进行实验验证。结果表明：摩擦系数越大，系统的振动幅值越高，振动噪声的分布越大，系统的稳定性越低，在一定范围内，随着载荷的增加，轴承系统的振动增大；转速对水润滑轴承振动频率的影响较小，但系统的振动加速度随着速度的增大而增大。有限元分析与实验结果基本吻合，为研究水润滑轴承的振动噪声机理提供理论依据。