Showing papers by "Rama B. Bhat published in 1990"
TL;DR: In this paper, a comparison of natural frequencies of transverse vibration of thin, rectangular plates of non-uniform thickness with different combinations of boundary conditions is presented, as obtained by using the following methodologies: (1) the Rayleigh-Ritz method with characteristic orthogonal polynomial shape functions; (2) the shape function which includes two exponents that are to be determined by minimizing the fundamental frequency coefficient.
67 citations
TL;DR: In this article, a study of the various design criteria is made for an industrial electric motor rotor supported on hydrodynamic journal bearings using the transfer matrix method, and results are presented for unbalance response, dissipation coefficient, maximum transmitted force, stress amplitudes and fatigue life.
Abstract: Large rotor systems are commonly supported on hydrodynamic journal bearings and the dynamic behavior of such rotors is significantly influenced by the bearing characteristics. The major factors in the design and operation of such rotor systems are critical speeds, response due to residual unbalance and stability against self-excited vibration. A machinery designer, apart from analyzing the dynamic performance of the rotor-bearing system, must also consider the relationship of rotor-bearing dynamics with other design considerations such as maximum force transmitted at bearing stations, energy dissipation due to unbalance of rotor, stress amplitudes and fatigue life. In this paper a study of the various design criteria is made. Results are presented for unbalance response, dissipation coefficient, maximum transmitted force, stress amplitudes and fatigue life in the case of an industrial electric motor rotor supported on partial journal bearings using the transfer matrix method. This method is general and ca...
2 citations