Abstract
Rolling element bearings are widely-used machine components and their failure can result in damage to the whole machine. A bearing failure can be caused by many factors. In most cases it is damage on the raceway surface as a result of rolling contact fatigue (RCF). This article describes the fatigue analysis consists of determining service-life of a roller bearing using a stress-strain analysis with finite element method and subsequent numeric calculation using software fe-safe with application of multiaxial fatigue criterion. These theoretical results are compared to the experiments carried out on AXMAT test-rig with more accurate defect detection using acoustic emission method. Numerical service-life calculation can be applied as tool for fatigue life prediction of full scale bearing with sufficient correlation with experimental results.
Highlights
Nowadays it is known several approaches for prediction of service life of machine parts
Second appropriate criterion is Liu-Mahadevan [3] which is based on critical plane of maximal shear stress range and it is used for high-cycle fatigue
These parameters monitored during the test of one material sample are shown in figure 2.The process of experimental evaluation of steel durability using the acoustic emission method is described in more detail in articles [5] and [6]
Summary
Nowadays it is known several approaches for prediction of service life of machine parts. In the article [1] is mentioned a possibility of using Brown-Miller MFC for RCF description This is the strain-based criterion with the assumption of initiation in the critical plane (plane of maximal shear strain range). Second appropriate criterion is Liu-Mahadevan [3] which is based on critical plane of maximal shear stress range and it is used for high-cycle fatigue. The experiment is based on tests series executed on testing machine AXMAT It is the system of roller bearing ring, rolling elements and a sample.
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