Tahani - Assistant professor, Ferdowsi University of Mashhad, Iran
Soheili - PhD student, Ferdowsi University of Mashhad, Iran
Abachizadeh - MSc of Mechanical Engineering, Ferdowsi University of Mashhad, Iran
Farshidianfar - Associate professor, Ferdowsi University of Mashhad, Iran

In this paper, the application of distributed-lumped (hybrid) modeling technique (DLMT) in modeling of the forced torsional vibration of systems is investigated. To illustrate the simplicity and efficiency of the method, an industrial example of rotating shaft with a lumped element subjected to various torques is analyzed. Natural frequencies obtained by this method are compared with those obtained by using finite element and Holzer's method. In addition, time responses of the system subjected to three different types of torsional forces are computed by this method.

Distributed, Lumped, Modeling, Frequency response, Time response