关键词: 流体力学, 液力变矩器, 强度, 流固耦合

Abstract:

In order to solve the blade-wheel's strength problem  under actual work conditions of a  hydrodynamic torque converters used on vehicles,a finite element model of blade-wheel's strength was established.
Considering the torque converter's work conditions,a match calculation between the torque converter and the engine was finished firstly,through which the steady working point in actual applications was obtained.A finite element analysis was executed after fluid load and centrifugal load were applied on the blade-wheel,by which the relationship among blade-wheel's stress distribution,deformation and work conditions was got.During the analysis the blade-wheel was regarded as a cyclic symmetric structure,
so the cyclic boundary connection was defined by a data constraint equation.With the help of the constraint equation,the whole blade-wheel's strength analysis was able to complete on a single basic cyclic sector.It is suggested by the result of this study that this research method is effective in the blade-wheel's strength analysis.

Key words: fluid mechanics, hydrodynamic torque converter, strength, fluid-structure interaction(FSI)