The effect of geometry on the stress distribution of cross shaft

Abstract

In this paper will be represented how changes in geometry can affect on size of the stress change cross shaft of cardan joint. The task of the cardan joint is mechanical transmission of power and motion between shafts which are changing position of the axis in the process of exploitation or are placed at certain angles. Cross shaft is one of the most important parts of the cardan joint. In most cases the lifetime of cardan joint depend from the cross shaft. The critical stress of cross shaft will be calculated using the analytical method and been tested by numerical method. To the numerical method used as reliable for further change the geometry cross shaft. We can see how small changes in geometry of cross shaft can lead to a significant reduction on critical stress. Increasing radius in the transition and basis sleeve of the cross shaft reduces the critical stress at the root up to 40%. It will be the comparisons of the results in order to come to the best of the geometric shape of a cross shaft which has the lowest critical stress.