Dynamic Characteristics of Sugarcane Cutter Rotor System with Squeeze Film Damper WANG Bo, WEI Daogao, JI Yinggang, LIU Qingting 2, YANG Dan彤2 (1. School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei 230009, China; 2. Southern Agriculture, South China Agricultural University The key technologies of machinery and equipment are jointly constructed by the Ministry of Education, m1, m2, where p is the moment of inertia of the cutterhead. The transfer matrix method M is used to obtain the differential equations of the rotor system. The equation (1) is the axis of the disk. The movement in the x direction, the equation (2) is the movement of the disk 1 in the y direction of the axis, the equation (3) is the movement of the axis 2m2 in the x-direction, the equation (4) is the movement of the axis 2m2 in the y-direction, and the equation (5) is the disk. 2m2 rotation motion around z direction: power frequency; t time; moment of inertia of p-cutter; c lateral damping coefficient; damping coefficient of Ct torsion direction, x, direction displacement; a torsion angle of torsion direction; Initial phase angle; ei cutter disc eccentricity; M torsional excitation torque, Fy cutter disc cutting force in x, direction component; kTz direction torsional stiffness; I cutter axis moment of inertia; E elastic modulus; Length; and i cutter cutting force work Radius; Fx, Fy cutter cutting force F linear component in the x, direction; kB film equivalent stiffness; C equivalent damping film. (2) When SFD is not included, the rolling bearing is directly matched with the bearing support. The equation of motion of the cutter rotor system is a 3-degree-of-freedom differential equation system containing only xi, yi, a. 1.3 Oil film force model The short-bearing nonlinear oil film force model is selected in this paper. Under the assumption of short bearing approximation theory, the radial nonlinear oil film reaction force Fr and the circumferential nonlinear oil film reaction force Ft are obtained. 2 Zhou Shicheng, Yang Wang, Yang Jian, and so on. A knife cut off the sugarcane dynamics simulation test. Journal of Clothing Industry Machinery, 2011, 42 (1): 68 Deng Dingke, District Yinggang, Li Zhiwei, et al. The forward speed of the sugar cane harvester matches the cutter speed. Clothing research, 006 (6): 35-38. Wang Yugui. Study on Optimization of Working Parameters of Sugarcane Harvester Disc Cutter D. Nanning: Guangxi University, 2004. Wang Yugui, Jiang Yongsheng, Yang Jian. Optimization of the working parameters of sugar cane cutters. Journal of Guangxi University, 2008, 33 (2): 138 Sun Liquan. Research on stability of vertical rotor bearing system D. Harbin: Harbin Institute of Technology, 2010. Lin Mao, Fu Xin, Feng Huolun, et al. Research status and prospects of sugarcane cutters. China's clothing, 011 (2): 15-19. Li Fenggen, Lin Mao, Xu Outeng, and so on. Analysis of the factors affecting the break rate of two types of sugar cane cutters. Clothing research, 2012, 4: 136 Gu Jialiu, Ding Kuiyuan, Liu Qizhou, and so on. Rotor dynamics M. Beijing: National Defense Industry Press, 1985: 138 should be widely. Fundamental excitation identification and rotor dynamics studies of turbochargers. Shanghai: Shanghai Jiaotong University, 008. Fu Gaoxue. Research on key components of sugarcane leaf crushing and returning machine. Haikou: Hainan University, 010. Sequencer And Timer Delay,Delay On Make Timer,Timer Delay Relay,Timer Delay Switch LONG TERM ELEC. CO., LTD , https://www.longtermhvac.com