RESEARCH OF SQUEEZE FILE DAMPER BEARING FOR ENGINES OF AUTOMOBILES

汽车发动机挤压锉阻尼轴承的研究

• 批准号: 05452141
• 负责人: TANAKA Masato
• 金额: $ 4.03万
• 依托单位: THE UNIVERSITY OF TOKYO
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05452141/
• 关键词: squeeze film damper; oil film force; fluid inertia; simulation; dynamic characteristic; high eccentricity

1.The oil film reaction forces in squeeze film damper bearing was theoretically obtained for reciprocative loading normally found in crankshaft bearings of automobile engines. Based on the theory, a computer program was developed and coded to simulate the dynamic response of squeeze film damper bearing under the reciprocative loading. This simulation program enables to predict the behavior of a damper journal in the damper bearing installed in actual automobile engines.2.A test rig was set up to measure the dynamic characteristics of squeeze film damper bearings under reciprocative loading, that is, the dynamic response of damper journal in the bearing and also the hydrodynamic pressure developed in the oil film. Measurements proved to be in good agreement with predictions.3.The simulation program was modified to take into consideration the inertia effects of the oil film. The modified theory was in beter agreement with measurements at high reciprocative frequency of loading where the inertia effect was considered to be pronounced.

1.针对汽车发动机曲轴轴承中常见的往复载荷，从理论上获得了挤压油膜阻尼轴承中的油膜反作用力。基于该理论，开发并编写了计算机程序来模拟挤压油膜阻尼轴承在往复载荷下的动态响应。该仿真程序能够预测实际汽车发动机中安装的阻尼轴承中阻尼轴颈的行为。2.建立了试验台来测量挤压油膜阻尼轴承在往复载荷下的动态特性，即动态响应轴承中阻尼器轴颈的压力以及油膜中产生的流体动压力。测量结果与预测吻合良好。3.修改模拟程序以考虑油膜的惯性效应。修改后的理论与高往复负载频率下的测量结果更加一致，其中惯性效应被认为是明显的。