Research on Periodic Motion Stability of Multi-DOF Rotor-bearing System with Crack Fault
Multi-DOF model of double-disc rotor-bearing system taking crack and oil film support into account is established, and the continuation shooting method combined with Newmark is also applied to stability analysis of continuous system. This paper mainly studied the variation law of five parameters domain in crack depth and location, then a number of conclusions are found: first, its feasible to study the stability of nonlinear rotor-bearing system with crack faults using FEM; secondly, the crack depth and location has a certain impact on instability speed, but the impact is not great and owns its certain law. As the crack depth and location is getting close to the middle position of rotor, due to its impact on the oil film support, the instability speed of system increases. This method and results in this paper provides a theoretical reference for stability analysis and vibration control in more complex relevant rotor-bearing system with crack fault.
rotor-bearing system crack fault stability finite element model bifurcation
Chaofeng Li Qinliang Li Jie Liu Bangchun Wen
School of Mechanical Engineering & Automation, Northeastern University, Shenyang Liaoning School of Mechanical Engineering, Shenyang University of Technology, Shenyang Liaoning
国际会议
大连
英文
3-6
2011-10-19（万方平台首次上网日期，不代表论文的发表时间）