Gear system modeling considering sliding bearings&rsquo; time-varying dynamic parameters

PDF(763 KB)

Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (23) : 246-252.

Gear system modeling considering sliding bearings’ time-varying dynamic parameters

WEI Wei,GUO Wenyong,WU Xinyue,WU Qihao

Author information +

History +

Abstract

In order to study a gear system more deeply, considering its bearings’ time-varying dynamic parameters and effects of its dynamic gear backlash, its dynamic model was established to analyze its vibration responses.A cylindrical spur gear system was taken as the study object.A dynamic pressure lubricated bearing model was combined with a gears’ meshing one, considering effects of dynamic gear backlash, the gear system’s dynamic equations were established.Here, a method to solve a gear-sliding bearing coupled system was proposed.Effects of bearing clearance, backlash and rotating speed on the system’s vibration responses were studied.The results showed that sliding bearing dynamic parameters’ time-varying characteristics are helpful to improve the system’s vibration responses; increasing bearing clearance and gear backlash within a certain range can reduce gears’ dynamic meshing force and radial vibration; with increase in gear rotating frequency, the system’s vibration response amplitudes decrease and its motion tends to be stable.

Key words

gear system / bearing dynamic parameters / time-varying gear backlash / vibration characteristics

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

WEI Wei,GUO Wenyong,WU Xinyue,WU Qihao. Gear system modeling considering sliding bearings’ time-varying dynamic parameters[J]. Journal of Vibration and Shock, 2019, 38(23): 246-252

References

[1]. S. Theodossiades, S. Natsiavas. On geared rotor dynamic systems with oil journal bearings [J], Journal of Sound and Vibration, 2001, 243 (4): 721–745.
[2]. A. Kahraman, Singh R. Non-linear dynamics of a spur gear pair [J]. Journal of Sound and Vibration, 1990, 142(1): 49-75.
[3]. A. Kahraman, Singh R. Interactions between time-varying mesh stiffness and Clearance non-linear ties in a geared system [J]. Journal of Sound and Vibration, 1991, 146(1): 135-156.
[4]. A. Kahraman, Non-linear dynamics of a geared rotor-bearing system with multiple clearances [J]. Journal of Sound and Vibration, 1991, 114(3):469-506.
[5]. Velex P, Sainsot. An analytical study of tooth friction excitations in errorless spur and helical gears [J]. Mechanism and Machine Theory, 2002, 37: 641-658.
[6]. Velex P, Ajmi M. On the modeling of excitations in geared systems by transmission errors [J]. Journal of Sound & Vibration, 2006, 290(3): 882-909.
[7]. 王庆, 张以都. 二级圆柱斜齿轮系统耦合动态响应分析[J]. 振动与冲击, 2012, 31(10): 87-91.
Wang Qing, Zhang Yidu. Coupled analysis based dynamic response of two-stage helical gear transmission system [J]. Journal of Vibration and Shock, 2012, 31(10): 87-91.
[8]. Baguet S, Jacquenot G. Nonlinear couplings in a gear-shaft-bearing system [J]. Mechanism and Machine Theory, 2010, 45(12): 1777-1796.
[9]. 张将, 秦训鹏, 陈浩冉. 考虑支撑间隙的齿轮系统动力学相应分析[J]. 噪声与振动控制, 2017, 37(5):50-54+159.
Zhang Jiang, Qin Xunpeng, Chen Haoran. Dynamic response analysis of gear systems with support clearance considered [J]. Noise and Vibration Control, 2017, 37(5):50-54+159.
[10]. Zhenxing Liu, Zhansheng Liu, Jingming Zhao, et al. Study on interactions between tooth backlash and journal bearing clearance nonlinearity in spur gear pair system[J]. Mechanism and Machine Theory, 2017, (107):229–245.
[11]. Sternlicht B. Elastic and Damping Properties of Cylindrical Journal Bearings [J]. Journal of Basic Engineering, 1959, 81: 101-108.
[12]. 杨金福, 刘占生, 于达仁等. 滑动轴承非线性动态油膜力及稳定性的研究[J]. 动力工程, 2004, 24(4):501-505.
Yang Jinfu, Liu Zhansheng, Yu Daren, et al. Research on nonlinear oil film force and its stability of journal bearing [J]. Power engineering, 2004, 24(4):501-505.
[13]. 刘大全, 肖忠会, 张文等. 滑动轴承非线性油膜力的一维直接解法[J]. 机械工程学报, 2005, 41(2):51-56.
Liu Daquan, Xiao Zhonghui, Zhang Wen, et al. Direct solution method of one-dimensional problem for nonlinear oil-film force of sliding bearing [J]. Chinese Journal of Mechanical Engineering, 2005, 41(2):51-56.
[14]. Bernard J. Hamrock. Fundamentals of fluid lubrication. McGraw, 1994(12).
[15]. J.W. Lund, K. K. Thomsen. A Calculation method and data for the dynamic coefficients of oil-lubricated journal bearings [J]. Topics in Fluid Film Bearing and Rotor Bearing System Design and Optimization. ASME Publication, 1978:1-28.