切向供气球面动静压气体轴承承载力分析-AtlantisPress.PDF

Advances in Computer Science Research (ACSR), volume 61 7th International Conference on Education, Management, Computer and Society (EMCS 2017) Bearing Capacity Analysis of Spherical Hybrid Gas Bearings with Tangential Gas Supply Chenhui Jia1, a, Jing Gao1, b*, Ming Qiu1, c and Wensuo Ma1, d 1School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China. axjiachenhui@163.com, 163.com, cqiuming69@126.com, dmawensuo@126.com Abstract. In order to research the static performances of the spherical spiral groove hybrid gas bearings, the lubrication analysis mathematical model of spherical hybrid gas bearings is established with variable tangential angels of gas supply. Subsequently, the mathematical model is transformed by derivatives and integrals methods and finite difference method. Homogeneous coordinate system of hybrid gas bearings is established in this process, and transformation with angle retained and oblique coordinate transformation are employed to the mathematical model. The difference expressions of gas film stable pressure control equations are established. The method of dividing grids is employed to the solution region, so the stable pressure distribution of gas film is numerically calculated by using VC++6.0 software. The bearing capacity is obtained by integration of gas film circumferential and radial pressure. The influence law of supply pressure and supply tangential angle on bearing capacity is researched in different eccentricity and speed. The results show that parameters of gas bearings need to be chosen properly to get better bearing capacity. Keywords: Lubrication analysis m