转子不平衡对两跨三支撑轴系振动特性的影响

发布时间：2018-06-11 18:19

本文选题：两跨三支撑轴系 + 转子不平衡　；参考：《动力工程学报》2017年09期

【摘要】：针对汽轮机组、航空发动机等两跨三支撑轴系常发生不平衡振动故障问题,研究了各转子不平衡对轴系振动特性的影响.首先建立两跨三支撑轴系动力学有限元模型,在各跨转子上分别施加同相和反相不平衡激励,对轴系不平衡稳态响应进行分析,并搭建了轴系模拟实验台.结果表明:这种轴系转子跨内加重振动以单转子不平衡振动特性为主,转子间振动相互影响较大,具有明显的悬臂转子外伸端振动特性.
[Abstract]:In order to solve the problem of unbalance vibration of two span and three support shafting such as steam turbine unit and aeroengine, the effect of rotor unbalance on the vibration characteristics of shaft system is studied in this paper. Firstly, the dynamic finite element model of two-span three-braced shafting is established, and the in-phase and inverse-phase unbalance excitation is applied to each span rotor respectively, and the unbalance steady state response of shafting is analyzed, and the shafting simulation test bench is built. The results show that the unbalance vibration of single rotor is the main characteristic of this kind of shaft rotor, and the vibration between rotors has great influence on each other, and it has obvious vibration characteristics of cantilever rotor at the extension end.
【作者单位】：湖南科技大学机械设备健康维护湖南省重点实验室;北京化工大学诊断与自愈工程研究中心;神华国华(北京)电力研究院有限公司;
【基金】：国家自然科学基金资助项目(51575176,11672106,51375162) 湖南省教育厅优秀青年资助项目(15B085) 湖湘青年创新人才资助项目(2015RS4043)
【分类号】：TH113.1

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