关键词: 机械设计, 高速球轴承, 载荷分布, 杆系有限元, 矩阵模型, 降阶简化

Abstract:

he variation features of the geometric and kinetic parameters of the highspeed rolling body were given based on the conventional calculation method of the load distribution of the highspeed ball bearing. According to these features, a new calculation method was suggested to simplify the equation group of the highspeed ball bearing load distribution into a matrix model of the linkage finite element method(FEM). It was discovered that some of the parameters of the linkage FEM model are independant variables and some are known variables  in the calculation process through the analysis of the equilibrium equation of the bearing inner ring. Therefore, the FEM model could be reduced into a 4order matrix model, simplifying the load distribution calculation to a great extent. The simplified method was suitable for the matrix solution on Matlab, the programing is simplified, the calculation speed increased, and the calculation stability was inproved. A case example showed that the fensibility and reasonableness of the proposed method instead of the conventional method.

Key words: mechanical design, high-speed ball bearing, load distribution, linkage finite element method, matrix model, simplification of order reducing