《Study on Bifurcations and Chaos of Slideway-Joint System》
Zhang Wenge, Wang Yu, Shu Haiyan, Wang Shijun, Su Dan, Zhao Jinjuan
( 1. Xi’an Vocational and Technical Institute, Xi’an 710077; 2. School of Mechanical and Precise Instrument, Xi’an University of Technology, Xi’an 710048; 3.School of Mechanical Engineering Instrument, Heilongjiang niversity of Technology and Science, Harbin 150027; 4.School of Printing and Packaging Engineering, Xi’an University of Technology, Xi’an 710048 )
The nonlinear dynamic behavior of the slideway-joint system of machine tools is studied. Taking into account the hysteretic characteristics of this system in contact vibration, a mathematical model for dynamic analysis is established. By means of asymptotic method, the coefficients of damping and stiffness equivalent to the hysteresis are obtained. Range-Kutta method is used to solve the system equation. The nonlinear dynamic responses of the guideway-joint system for different damping coefficients are discussed. The result shows that the chaotic vibration will occur when the damping oefficient varies in some range.