变深度螺旋槽止推轴承的边界元法计算

本文以分析变深度螺旋槽止推轴承为例介绍了边界元法在润滑力学研究领域中的应用,以及相应的边界条件的处理方法,同时还讨论了轴承的尺寸参数对其性能参数的影响。

Calculation of a Spiral Groove Thrust Bearing of Varying Depth with Boundary Element Method

As the pressure control equation (i, e. Reynold's Equation) was transformed into Poisson's Equation in this paper, the pressure distribution is solved using Boundary Element Method. The step numbers of algebraic equation group are effectively dropped, the calculation time of computer is largely decreased and the precision of calculation result is raised. Because spiral groove bearings are of higher load-carrying capacity and less friction force in comparison with the other bearings under high speed condition, they are widely used in high speed rotating machinery. Therefore, a spiral groove thrust bearing of varying depth is choosed as an example of the application of Boundary Element Method in the paper. The treatment of boundary condition is introduced and the influence of dimensional parameters on bearing's performance, such as load-carrying capacity, flow rate and frictional torque are discussed. Also, satisfactory results are presented.