Rotordynamic prediction of mode order transition when rotor has an overhang

作     者：Konstantin Shaposhnikov HONG Jie ZHANG Da-yi MA Yan-hong Konstantin Shaposhnikov;HONG Jie;ZHANG Da-yi;MA Yan-hong

作者机构：School of Energy and Power EngineeringBeijing University of Aeronautics and Astronautics 

出 版 物：《航空动力学报》 (Journal of Aerospace Power)

年 卷 期：2015年第30卷第2期

页      面：397-409页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0701[理学-数学] 

主　　题：疲劳寿命分散性 顺序统计量 寿命分散系数 小子样 

摘      要：Nowadays rotating machinery grows and develops extremely fast due to its multi-branch *** the fields of rotordynamics and rotor balancing had a strong background based on previous experience in order to perform efficient and safe operation for the rotating machines,still there are problems which are hard to be dealt with in some special *** of them is balancing of the rotor with huge *** with overhang is inherent to have console modes,which previously often were observed separately from the other modes in rotordynamic *** such a way console modes,their behavior,order of appearance and interaction with other modes were described in current paper in more *** results confirmed that console modes obey the principle of orthogonality in the same way as all other modes and hence could be efficiently balanced using modal balancing *** results revealed likelihood of such phenomena as modes order transition,when the rotor has an *** a consequence perfectly balanced console rotor could not be so due to modes order transition effect when the bearing stiffness in situ differs from bearing stiffness of balancing *** results will be useful for engineers who are involved in area of rotating machinery vibration tuning for the rotor with huge overhang and benefit them to recognize these modes efficiently and to perform balancing successfully.