Abstract: This paper investigated the vibration behavior of a tapered roller bearing (TRB). A two degree-of-freedom vibration model was adopted for estimating the radial vibrations of TRBs subjected to angular misalignment and unbalance force due to the rotor eccentricity. The bearing stiffness used in the system equations of motion was determined from a five degree-of- freedom model of TRBs. The system equations of motion for the bearing were numerically solved using the Runge-Kutta algorithm. The bearing vibration responses in frequency and time domains were obtained and discussed considering the effects of rotational speed, axial preload, and angular misalignment.

• Publication Date: 26-Feb-2017
• DOI: 10.15224/978-1-63248-118-4-25
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Abstract: Reinforced concrete (R/C) cylindrical shell with hoop edge beams was analyzed by using the nonlinear FEM. R/C shell with free edges must be stiffened by the edge beam. From the numerical results of the previous papers, the minimum size of the edge beam was placed on both hoop edges under self weight as the beam having the maximum ratio of the strength to the weight. In this paper, three kinds of connecting position between R/C shell and the edge beam were considered. One was the concentric connection of R/C shell and the beam (Type C). The second one was the shell connected at the top of the beam (Type L). The third one was the shell connected with the bottom of the beam (Type U). R/C shell was pin supported on the meridian and free on the hoop edges. Uniformly distributed pressure was applied to the model. From the n13umerical analyses, it was concluded that Ty16pe L was efficient.

• Publication Date: 26-Feb-2017
• DOI: 10.15224/978-1-63248-118-4-26
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