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Investigation of the dynamic characteristics of a dual rotor system and its start-up simulation based on finite element method 被引量：19

Investigation of the dynamic characteristics of a dual rotor system and its start-up simulation based on finite element method
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摘要 Recently,the finite element method(FEM) has been commonly applied in the engineering analysis of rotor dynamics.Gyroscopic moments,rotary inertia,transverse shear deformation and gravity can be included in computational models of rotor-bearing systems.In this paper,a finite element model and its solution method are presented for the calculation of the dynamics of dual rotor systems.A typical structure with two rotor shafts is discussed and the procedure for obtaining the coupling motion equations of the subsystems is illustrated.A computer program is developed to solve critical speeds and to simulate the transient motion.The influence of gyroscopic moments on co-rotation and counter-rotation is analyzed,and the effect of the speed ratio on critical speed is studied.The dynamic characteristics under different conditions of increasing speed during start-up are demonstrated by comparison with transient nodal displacements.The presented model provides a complete foundation for further investigation of the dynamics of dual rotor systems. Recently, the finite element method （FEM） has been commonly applied in the engineering analysis of rotor dynamics. Gyroscopic moments, rotary inertia, transverse shear deformation and gravity can be included in computational models of rotor-bearing systems. In this paper, a finite element model and its solution method are presented for the calculation of the dy- namics of dual rotor systems. A typical structure with two rotor shafts is discussed and the procedure for obtaining the coupling motion equations of the subsystems is illustrated. A computer program is developed to solve critical speeds and to simulate the transient motion. The influence of gyroscopic moments on co-rotation and counter-rotation is analyzed, and the effect of the speed ratio on critical speed is studied. The dynamic characteristics under different conditions of increasing speed during start-up are demonstrated by comparison with transient nodal displacements. The investigation of the dynamics of dual rotor systems. presented model provides a complete foundation for further
作者 Zhong-xiu FEI Shui-guang TONG Chao WEI
机构地区 Institute of Chemical Machinery Engineering Mechanical Design Institute Institute of Thermal Engineering and Power Systems
出处 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2013年第4期268-280,共13页 浙江大学学报（英文版）A辑（应用物理与工程）
关键词 Dual rotor system Critical speed Transient response Finite element method(FEM) Dual rotor system, Critical speed, Transient response, Finite element method （FEM）
分类号 TH774 [机械工程—精密仪器及机械]
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参考文献20

  • 1Abduljabbar, Z., ElMadany, M.M., A1Abdulwahab, A.A., 1996. Active vibration control of a flexible rotor. Computers and Structures, 58(3):499-511. [doi:10.1016/0045-7949 (95)00164-C].
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Journal of Zhejiang University-Science A(Applied Physics & Engineering)
2013年 第4期

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