Contact Performance Analysis On Self-lubricating Spherical Plain Bearings

Self-lubricating spherical plain bearings are widely used in engineering machinery, heavy vehicles, aerospace equipment, military equipment and other important areas. With the growing demand of high quality bearings, the design and manufacturing has the important theoretical meaning and engineering value, including the structure optimization and performance study of the friction pair contact. In this paper, research of the self-lubricating spherical plain bearing on the contact mechanics performance and friction heat production will be taken by using ANSYS Workbench. The research content of the essay is as follows:A theoretical formula is deduced by using surface integral to the spherical plain bearing under radial and axial load of the average contact pressure, and fixed by finite element method for the correction. The finite element model of the spherical plain bearing under three kinds of load conditions is established, and the analyses about the influence of load bearing contact mechanics performance and the influence of friction pair of stress and displacement distribution are obtained.The main dimensions of the spherical plain bearing are optimized selected based on the orthogonal experiment, and the influence degree of the size factors on the bearing contact mechanics performance are obtained as the follow, from big to small in the order: outer ring width, liner thickness, inner ring spherical diameter and inner ring width. Fabric liner is discussed under the condition of the elastic modulus and static load deflection Angle on the mechanical behavior of the bearing contact.Finite element model of temperature field is established under the condition of the bearing in axial and radial swing, and the temperature distribution of the face partition is obtained. Under the condition of the axial swing, how the four kinds of working condition(applied load, swing angle, swing cycle and the coefficient of friction) influencing the law of frictional heat to the bearing contact sphere is analyzed.