考虑油膜力作用的滑动轴承冲击响应特性试验研究

发布时间：2018-04-20 09:57

本文选题：滑动轴承 + 水下爆炸　；参考：《机械强度》2016年02期

【摘要】：船用滑动轴承是轴系的重要组成部分,其稳定性是舰船机动性的基本保证。但滑动轴承在水下爆炸载荷作用下的冲击试验却不多见。以船用大型滑动轴承为研究对象,专门研制了一套能够模拟实船安装状态和工作状态的试验传动轴系系统,在浮动冲击平台上开展了水下爆炸冲击试验,分析了轴承瞬态响应特征。结果发现,滑动轴承油膜关系在剧烈的垂向冲击载荷作用下出现碰摩,能够瞬时提高运转扭矩,对轴系动力源的冲击可靠性提出了更高要求,浮台横向冲击载荷较小,轴系振动幅值未超过轴承间隙。通过试验研究发现目前应用的油膜动力学模型并不适用冲击动响应分析,急需建立适用的模型。研究对于进一步修正舰艇轴系冲击动力学模型、提高仿真预报精度提供了参考。
[Abstract]:Marine sliding bearing is an important part of shafting, and its stability is the basic guarantee of ship maneuverability. But the impact test of sliding bearing under underwater explosion load is rare. Taking the large sliding bearing of ship as the research object, a set of experimental transmission shaft system which can simulate the installation state and the working state of the ship is specially developed, and the underwater explosion impact test is carried out on the floating impact platform. The transient response characteristics of bearings are analyzed. The results show that the oil film relation of sliding bearing appears rub-impact under the action of severe vertical impact load, which can instantly improve the running torque, and put forward higher requirements for the impact reliability of shafting power source, and the lateral impact load of floating platform is smaller. Shaft vibration amplitude does not exceed bearing clearance. It is found that the oil film dynamic model used at present is not suitable for impulse dynamic response analysis, and it is urgent to establish a suitable oil film dynamic model. The research provides a reference for further modifying the impact dynamics model of ship shafting and improving the accuracy of simulation and prediction.
【作者单位】：海军装备研究院;
【基金】：国家自然科学基金项目(51209215)资助~~
【分类号】：TH133.31

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