关键词: 滚滑轴承, 循环载荷, 振动

Abstract: Vibration physical model of a new type of bearing is established on the basis of depth study for its structure and working mechanism. The mathematical model is established by vibration mechanics theory. The characteristic equation and characteristic solution of the inherent vibration is obtained by the mathematical model. The adjunctive matrix is obtained by the systems inherent vibration equation. The dominant mode of vibration is obtained by the adjunctive matrix. The main mass matrix is obtained by the dominant mode of vibration. The regular modal matrix is obtained by the main mass matrix. The steady-state response expression of the new bearing is obtained. The vibration modes and amplitude of the system are analyzed by steady-state response expression. And some of the factors that affect the system amplitude are analyzed by calculation and experiment. The results show that the system exist the two main modes that are the same vibration in positive or negative of x and y directions and the opposite direction vibration in positive or negative of x and y directions, and the factors that make the new bearing resonance are inner quality and number of roller and inner rotary position and the stiffness of roller and the stiffness of the oil wedge between that exist between the slider and the rings, and the system will resonance when the factors combine in a certain way and its value is equal to the excitation frequency, and the vibration amplitude of the new bearing is unchanged during the rotation of the inner ring and is inversely proportional to the number of the roller and the roller radial direction stiffness.

Key words: Cyclic loading, Rolling-sliding blend bearing, Vibration