Soheili - M.Sc. Student, Mechanical Engineering Department, Ferdowsi University of Mashhad, Iran
Farshidianfar - Assistant Professor of Applied Mechanics, Mechanical Engineering Department, Ferdowsi University of Mashhad, Iran

In this paper, the equation of motion for a rotating shaft considering rotary inertia and gyroscopic effects is solved in new method. Combined with distributed-lumped modeling technique (DLMT), a highly accurate model for rotating systems is achieved. Natural frequencies obtained by this method are compared with two other methods, which showed a good conformity between them. The effect of shaft diameter, length and disk inertia in the first frequency is also investigated for various velocities by this method.

Distributed-Lumped-Modeling-Rotary Inertia-Gyroscopic Effect