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Tribological Analyses for Safety Sliding Bearings in Response to Emergency such as Eathquake

应对地震等紧急情况的安全滑动轴承的摩擦学分析

基本信息

批准号：
19560150
负责人：
HAYASHI Hirotsugu
金额：
$ 3.08万
依托单位：
Waseda University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2007
资助国家：
日本
起止时间：
2007 至 2010
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19560150/
关键词：
滑り軸受トライボロジー機械機能要素設計工学

项目摘要

It is important to analysis and develop the sliding bearings to certificate safty operation used engin bearigs and rotarinary machin bearings which are used for reguge from harricane & typhoon and for relife of earthquake & tsunami.To investigate dynamic oil film observation in journal sliding bearings experimentally by two high speed video cameras because it is important to make clear boundary conditions in journal bearing used dynamically in engines and turbo machines, more accurate tester of multi-purpose journal bearings was developed, and experimental frictional force and pressure distribution in steady state were measured.For scientific engine analyses, a simultaneous and approximate analyses were proposed for connecting rod big end bearings, for piston pin bearings and for crank shaft main bearings. However, to save computation time for engine bearing analysis, it is better to innovate new iteration methods to introduce solutions of partial differential equations in finite width bearing theory. Some kinds of Runge-Kutta methods were proposed by using variable step methods with inherent algorithm of engine bearings, and the characteristic of variable step's Runge-Kutta methods in engine bearing analyses are clarified.And effects of balance weight on performance such as journal orbits of piston pin boss bearings and small end bearings & big end bearings of connecting rod are small as compared with result of main bearings. The four new approximate analyses considering balance weight were proposed for main bearings and influences of balance weight on main bearings were shown in good agreements of results by simultaneous analysis, and the effects of starbation were discussed.

分析和开发滑动轴承对保证发动机轴承和旋转机械轴承的安全运行具有重要意义，这些滑动轴承用于风灾和海啸后的再生。为了通过两台高速摄像机对径向滑动轴承的动态油膜观察进行实验研究，因为明确发动机和涡轮机械动态使用的滑动轴承的边界条件很重要，因此研制了更精确的多功能滑动轴承测试仪，测量了稳态下的实验摩擦力和压力分布。为了科学地进行发动机分析，对连杆大端轴承、活塞销轴承和曲轴主轴轴承进行了同步和近似分析。然而，为了节省发动机轴承分析的计算时间，最好创新新的迭代方法，在有限宽轴承理论中引入偏微分方程组的解。将变步长Runge-Kutta方法与发动机轴承固有算法相结合，提出了几种变步长Runge-Kutta方法，阐明了变步长Runge-Kutta方法在发动机轴承分析中的特点，并且与主轴承相比，平衡重量对活塞销凸台轴承的轴颈轨迹和连杆小端轴承、大端轴承等性能的影响较小。提出了考虑平衡重量的四种新的主轴承近似分析方法，同时分析了平衡重量对主轴承的影响，并讨论了平衡重量对主轴承的影响。