Seismic Behavior of Rotation Shaft System at Start-up

기동시 회전축계의 지진응답 거동

  • 김상환 (한전기술(주) 전력기술개발연구소)
  • Published : 1998.03.01


A rotating shaft system subjected to seismic motions has been investigated for the various operating modes at start-up. During an earthquake excitation, the rotor may hit the stator of machines due to the excessive deformation of shaft, and thus the response of rotating shaft system of which foundation is supported by the vibration isolation devices has been simulated. In order to examine the transient response of the rotating shaft system at the start-up to both the various operating conditions and the seismic excitation simultaneously, nonlinear equations of motion are derived and solved numerically using Runge-Kutta method. The response of the rotating shaft system is calculated according to the operating modes as recommended by the machine and the system parameters such as the spring stiffness of isolation devices.


ratating shaft system;operating mode;selmic isolation;seismic response


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