STRESS IN CONTACT AREA OF GEAR TEETH WITH COATINGS DEPOSITED ON ELASTIC SUBSTRATE
Journal Title: Tribologia - Year 2012, Vol 244, Issue 4
Abstract
Due to the increased interest amongst teeth gear manufacturers for an adequate method of controlling the stress field, this paper presents an analysis of the applicability of the Hertz theory to the case of the contact of elements with coated material. The proposed method to determine the contact stress field in this case of contact was developed based on the classic Hertz theory and a specific numerical model. The gradient of hardness and elastic modulus in the material of the surface layer was measured by indentation. The following assumptions were made: the graded surface layer adheres perfectly to the substrate, the properties of surface layer material in the same distance from the surface are the same, the thickness of surface layer of the both surfaces in contact is the same, and the contact is without sliding. The results show that, by extending the combination of numerical experiments, the Hertz theory can be applied to the case of layered materials.
Authors and Affiliations
Michał Rusinek, Wiesław Rakowski
Keywords
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