Vibration characteristics of ball bearing for air conditioning sliding vane compressor excited by time-varying load
TANG Zhilin1, JIANG Diyong2, ZHANG Wenhu1, DENG Sier1, HU Yusheng3
1. School of Mechatronics,Henan University of Science and Technology, Luoyang 471003,China;
2. Hangzhou Bearing Group Co., Ltd., Hangzhou 310022, China;
3. State Key Lab of Air-conditioning Equipment and System Energy Conservation, Zhuhai 519000,China
Abstract:Based on the theory of rolling bearing dynamics, the nonlinear dynamic equations of ball bearing for air-conditioning vane compressor excited by time-varying load were established, and were solved by the Gear Stiff (GSTIFF) variable step integral algorithm. Then, analyzed the effects of structural parameters and working conditions on the vibration characteristics of the ball bearing. The results show that: under time-varying load, the vibration response frequency of the ball bearing is dominated by the time-varying load frequency, which shows forced vibration, and the vibration velocity amplitude is much higher than that under constant load. Among the structural parameters, the original radial clearances significantly effect on the vibration characteristics of the ball bearing, and adopting zero clearance or negative clearance can effectively suppress the impact of time-varying load on the bearing. The cage pocket clearance has little effect on bearing vibration, and there is an optimal cage pocket clearance to minimize cage vibration. Considering the effects of time-varying load, applying an axial preload of 0.3-0.6% dynamic load rating to the ball bearing can achieve the purpose of reducing bearing vibration.
唐志霖1,蒋迪永2,张文虎1,邓四二1,胡余生3. 时变载荷激励的空调滑片式压缩机用球轴承振动特性分析[J]. 振动与冲击, 2023, 42(1): 169-180.
TANG Zhilin1, JIANG Diyong2, ZHANG Wenhu1, DENG Sier1, HU Yusheng3. Vibration characteristics of ball bearing for air conditioning sliding vane compressor excited by time-varying load. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(1): 169-180.
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