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New Damage Accumulation Model for Spall Propagation Mechanism in Bearing Raceways

The aim of this study was to investigate the spall propagation mechanism in ball bearing raceways using physics-based models. Spalling is one of the most common types of bearing failures that can lead to catastrophic failure. This research takes a step forward toward developing a prognostic tool for...

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Autores principales: Ohana, Ravit, Klein, Renata, Shneck, Roni, Bortman, Jacob
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9966645/
https://www.ncbi.nlm.nih.gov/pubmed/36837380
http://dx.doi.org/10.3390/ma16041750
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author Ohana, Ravit
Klein, Renata
Shneck, Roni
Bortman, Jacob
author_facet Ohana, Ravit
Klein, Renata
Shneck, Roni
Bortman, Jacob
author_sort Ohana, Ravit
collection PubMed
description The aim of this study was to investigate the spall propagation mechanism in ball bearing raceways using physics-based models. Spalling is one of the most common types of bearing failures that can lead to catastrophic failure. This research takes a step forward toward developing a prognostic tool for ball bearings. It is first necessary to understand the spall progression process in order to formulate a constitutive law of spall deterioration and to estimate the amount of remaining useful life. Fragment formation in the vicinity of the spall edge was found to consist of surface and sub-surface cracks that eventually coalesce, and a fragment is released from the raceway, based on naturally-developed spalls. Here, we describe a physics-based model, integrating a dynamic model with a finite element one to simulate this process. A continuum damage mechanics (CDM) approach and fracture mechanics tools were embedded into the finite element model to simulate the damage propagation. The formation of cracks in the vicinity of the spall (surface and sub-surface cracks) were studied using this effective stress CDM model, and the propagation of the cracks was examined using two approaches: a fracture mechanics approach and an accumulated inelastic hysteresis energy CDM approach. The latter also predicts the overall process of a single fragment release. The simulation results of the spall propagation models are supported by experimental results of spalls from both laboratory experimental bearings and an in-service Sikorsky CH-53 helicopter swashplate bearing. The results obtained show that the impact of the ball on the spall edge affects the crack propagation and the appearance of the surface and sub-surface cracks. Both release the residual stresses and cause crack propagation until a fragment is released.
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spelling pubmed-99666452023-02-26 New Damage Accumulation Model for Spall Propagation Mechanism in Bearing Raceways Ohana, Ravit Klein, Renata Shneck, Roni Bortman, Jacob Materials (Basel) Article The aim of this study was to investigate the spall propagation mechanism in ball bearing raceways using physics-based models. Spalling is one of the most common types of bearing failures that can lead to catastrophic failure. This research takes a step forward toward developing a prognostic tool for ball bearings. It is first necessary to understand the spall progression process in order to formulate a constitutive law of spall deterioration and to estimate the amount of remaining useful life. Fragment formation in the vicinity of the spall edge was found to consist of surface and sub-surface cracks that eventually coalesce, and a fragment is released from the raceway, based on naturally-developed spalls. Here, we describe a physics-based model, integrating a dynamic model with a finite element one to simulate this process. A continuum damage mechanics (CDM) approach and fracture mechanics tools were embedded into the finite element model to simulate the damage propagation. The formation of cracks in the vicinity of the spall (surface and sub-surface cracks) were studied using this effective stress CDM model, and the propagation of the cracks was examined using two approaches: a fracture mechanics approach and an accumulated inelastic hysteresis energy CDM approach. The latter also predicts the overall process of a single fragment release. The simulation results of the spall propagation models are supported by experimental results of spalls from both laboratory experimental bearings and an in-service Sikorsky CH-53 helicopter swashplate bearing. The results obtained show that the impact of the ball on the spall edge affects the crack propagation and the appearance of the surface and sub-surface cracks. Both release the residual stresses and cause crack propagation until a fragment is released. MDPI 2023-02-20 /pmc/articles/PMC9966645/ /pubmed/36837380 http://dx.doi.org/10.3390/ma16041750 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ohana, Ravit
Klein, Renata
Shneck, Roni
Bortman, Jacob
New Damage Accumulation Model for Spall Propagation Mechanism in Bearing Raceways
title New Damage Accumulation Model for Spall Propagation Mechanism in Bearing Raceways
title_full New Damage Accumulation Model for Spall Propagation Mechanism in Bearing Raceways
title_fullStr New Damage Accumulation Model for Spall Propagation Mechanism in Bearing Raceways
title_full_unstemmed New Damage Accumulation Model for Spall Propagation Mechanism in Bearing Raceways
title_short New Damage Accumulation Model for Spall Propagation Mechanism in Bearing Raceways
title_sort new damage accumulation model for spall propagation mechanism in bearing raceways
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9966645/
https://www.ncbi.nlm.nih.gov/pubmed/36837380
http://dx.doi.org/10.3390/ma16041750
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