MATEC Web of Conferences
Volume 12, 2014FDMD II - JIP 2014 - Fatigue Design & Material Defects
|Number of page(s)||2|
|Section||Poster Session 4C: Fatigue Crack Initiation and Growth|
|Published online||09 June 2014|
Fatigue behaviour FEM modeling of deep groove ball bearing mounted in automotive alternator submitted to variable loading
1 GRESPI, Université de Reims Champagne Ardenne, EA 4694 URCA, Moulin de la Housse, 51687 Reims Cedex 2, France
2 Valeo Electric Systems, 2 rue André boulle, 94000 Créteil, France
a Corresponding author: firstname.lastname@example.org
Ball bearings subsurface materials are subjected to rolling contact fatigue with multiaxial stress state during loading cycle. The complex operating conditions of automotive bearings are different from classic operating conditions their fatigue crack initiation predicted by standards can be seen underestimated. This work presents a numerical approach of ball bearings to evaluate its fatigue behaviour in order to predict the life. A preliminary study has been done to evaluate the load distribution in the bearings. The results are integrated in a numerical dynamic model to study the bearing material rolling fatigue behaviour in constant and variable loading cases. By using fatigue criteria and damage laws, the analysis of stress state in bearing material leads to life prediction or the number of cycles before crack initiations. These results are compared to current standard methods used for ball bearing life prediction.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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