为了为旋转的颤动完成预言,机械,一个精确有限元素(FE ) 模型和转子系统的一个有效参数鉴定方法被要求。在这研究,一个测试钻塔被用作一个转子系统的一个原型基于一个 FE 模型验证一种新奇参数鉴定技术。在改变操作速度的转子柄颤动被测量并且与 FE 结果相关。第一, FE 建模的理论和鉴定技术被介绍。然后磁盘失衡参数,僵硬和测试钻塔上的适用的支持的抑制系数被识别。有识别参数的 FE 模型的计算回答与试验性的结果比较被学习。关键词转子系统 - 有限元素模型 - 参数鉴定 - 模型确认工程被中国(50775028 ) 和中国的科技的部的国家自然科学基础为 863 高技术计划(2007AA04Z418 ) 支持。
In order to achieve prediction for vibration of rotating machinery, an accurate finite element (FE) model and an efficient parameter identification method of the rotor system are required. In this research, a test rig is used as a prototype of a rotor system to validate a novel parameter identification technique based on an FE model. Rotor shaft vibration at varying operating speeds is measured and correlated with the FE results. Firstly, the theories of the FE modelling and identification technique are introduced. Then disk unbalance parameter, stiffness and damping coefficients of the bearing supports on the test rig are identified. The calculated responses of the FE model with identified parameters are studied in comparison with the experimental results.