...Zhibo Geng; Ke Xiao; Jiaxu Wang; Junyang Li At present, the mean value of the meshing stiffness and the gear backlash is a fixed value in the nonlinear dynamic model. In this study, wear is considered in the model of the gear backlash and time-varying stiffness. With the increase of the operating...

.... , 2010 , “ Determination of the State of Wear of Gearbox ,” Failures of Rolling Bearings , P. Klucho , ed., KONGRES Management , Bratislava , Slovakia, pp. 96 – 101 . [6] FZG web page , http://www.fzg.mw.tum.de/ [7] Moravec , V. , 2004 , “ Proposal of Running Test Program of HCR...

...Hyo-In Koh; Joon-Hyuk Park This paper is primarily aimed at investigating the excitation related factors of curve noise in urban metro lines. This study is initiated within the scope of a project on the development of an active steering bogie, which has the purpose of reducing the wear and noise...

... surfaces. Contact damping ratio values were found to decrease with increasing contact load for both Hertzian and flat surfaces. Furthermore, Hertzian contacts have larger damping compared to rough flat surfaces, which also agrees with the literature. The presence of minute amount of lubricant and wear...

... an unbalance excitation as if the rotor were rotating in the negative (clockwise) direction. 24 02 2003 01 12 2004 rotors stators vibrations structural acoustics mechanical contact nonlinear systems electric machines wear Rotor-to-stator rubbing can degrade the performance...

...J. H. Kuang, Professor; A. D. Lin, Graduate Student In this paper, the effect of tooth wear on the vibration spectrum variation of a rotating spur gear pair is studied. In order to approximate the dynamic characteristics of an engaging spur gear pair, the load sharing alternation, position...