Berücksichtigung des zähnezahleinflusses bei der bestimmung der bauteilfestigkeit von zahnrädern mit experimentell ermittelten zahnfußtragfähigkeitskennwerten

Characteristic values of the load carrying capacity for the bending strength of gears are usually determined in pulsating or back-to-back test rigs. The different concepts of these test rigs can yield different load conditions in the test gears. This can cause different characteristic values of the load carrying capacity for the same specimen in the different testing methods. The objective of this paper is to present a statistical method, which takes into account the influence of the number of teeth on the characteristic values of the load carrying capacity for bending strength in order to ensure a reliable gearbox design. Based on the extension of an established statistic model, the influence of the number of teeth on the characteristic values of the load carrying capacity is demonstrated. In addition, a method is presented that provides the obtained knowledge by simple regression formulas to make the results available for the engineer in the application. This ensures a reliable gear design, which is important in the context of lightweight construction and increasing power density. The flexible formulation of the statistical model allows simple modification of the model for the implementation of further failure modes with different distribution functions.