Abstract: Theoretical and experimental research on steady vibration response of shipping propulsion shafting with local nonlinear characteristics are done. Owing to the coupling with the nonlinear characteristics, it is difficult that steady vibration response of the shafting is got fen by regular solutions. On the basis of GLM (Galerkin – Levenberg – Marquardt) method, a new method that is called the separating and transform algorithm is proposed and programmed. It can be used for calculating steady vibration response of the shafting with the coupling. Steady vibration response of a single disk rotor is calculated using the program and is tested. The results show that the method and the program are useful for calculating steady vibration response of the shafting with local nonlinear dynamic stiffness and damping. Theoretical results obtained by calculating are coincident with experimental one.

Key words: Coupling, Nonlinear, Shafting, Steady response computing method, CFD, dynamic characteristics, experiment, thermal comfort, thermal environment