TY - JOUR

T1 - Fatigue life prediction of rolling bearings based on damage accumulation considering residual stresses

AU - Hwang, Jae Il

AU - Poll, Gerhard

N1 - Funding Information: The results presented in this paper were obtained within the project of Design of Highly Loaded Slewing Bearings (HBDV) with the grant number of 01183488/1. The authors would like to thank the German Federal Ministry for Economic Affairs and Climate Action (BMWK) for the financial and organizational support of this project. Funding Information: The authors also are deeply grateful to the German Federation of Industrial Cooperative Research Associations (AiF) for providing the experimental results obtained within the project ofFVA 8661-Einfluss kurzfristiger Oberlasten auf die Lebensdauer von Wlilzlagern (grant number of20733 N).

PY - 2023/9

Y1 - 2023/9

N2 - The determination of the fatigue life of rolling bearings is recommended to be conducted using the standard calculation models defined in ISO 281. These models yield reliable results for rotating applications. The standard models are continuously refined to align with advancements in bearing production processes and material improvements. However, when dealing with rolling bearings exposed to complex load conditions including oscillatory movements, as seen in rotor blade bearings in wind turbines, a validated calculation model has yet to be established. In the domain of structural mechanics, fatigue life evaluation for steel components is based on S-N curves. Variable operational loads are treated as load collective, and the load cycle to failure N under given operational conditions is determined through the application of the linear damage rale.This paper introduces a novel model that integrates the linear damage rule with established conventional bearing theories. Within one internal stress cycle, all rolling contacts are regarded as an internal load collective. To evaluate the internal load collective, the stress state at by applying this new approach, the results were observed to be in close agreement with the test results. Based on this investigation, it can be confirmed that the new model has the potential to provide reliable results without necessitating the bearing life exponent as well as the correction factors often required in conventional calculation models.

AB - The determination of the fatigue life of rolling bearings is recommended to be conducted using the standard calculation models defined in ISO 281. These models yield reliable results for rotating applications. The standard models are continuously refined to align with advancements in bearing production processes and material improvements. However, when dealing with rolling bearings exposed to complex load conditions including oscillatory movements, as seen in rotor blade bearings in wind turbines, a validated calculation model has yet to be established. In the domain of structural mechanics, fatigue life evaluation for steel components is based on S-N curves. Variable operational loads are treated as load collective, and the load cycle to failure N under given operational conditions is determined through the application of the linear damage rale.This paper introduces a novel model that integrates the linear damage rule with established conventional bearing theories. Within one internal stress cycle, all rolling contacts are regarded as an internal load collective. To evaluate the internal load collective, the stress state at by applying this new approach, the results were observed to be in close agreement with the test results. Based on this investigation, it can be confirmed that the new model has the potential to provide reliable results without necessitating the bearing life exponent as well as the correction factors often required in conventional calculation models.

KW - Bearing Fatigue Life

KW - Damage Accumulation

KW - Oscillating Bearing

KW - Residual Stress

KW - Rolling Contact Fatigue

KW - Simple Link Concept

UR - http://www.scopus.com/inward/record.url?scp=85183734967&partnerID=8YFLogxK

U2 - 10.24053/TuS-2023-0021

DO - 10.24053/TuS-2023-0021

M3 - Article

AN - SCOPUS:85183734967

VL - 70

SP - 32

EP - 39

JO - Tribologie und Schmierungstechnik

JF - Tribologie und Schmierungstechnik

SN - 0724-3472

IS - 4-5

ER -