scholarly journals Development of Finite Element Model for Analysis of Rolling Contact Fatigue Cracks in Wheel/Rail Systems

2007 ◽  
Vol 48 (1) ◽  
pp. 8-14 ◽  
Author(s):  
Makoto AKAMA
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Fatigue Cracks ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Element Model ◽  
Rolling Contact ◽  
Rail Systems

A dimensionless multi-size finite element model of a rolling contact fatigue crack

Wear ◽  
2005 ◽  
Vol 258 (7-8) ◽  
pp. 1265-1272 ◽  
Author(s):  
Stanisław Bogdański ◽  
Marcin Trajer
Keyword(s):  
Finite Element ◽  
Fatigue Crack ◽  
Finite Element Model ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Element Model ◽  
Rolling Contact

A finite element model for rolling contact fatigue of refurbished bearings

2015 ◽  
Vol 85 ◽  
pp. 1-9 ◽  
Author(s):  
Neil R. Paulson ◽  
Nathan E. Evans ◽  
John A.R. Bomidi ◽  
Farshid Sadeghi ◽  
Ryan D. Evans ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Element Model ◽  
Rolling Contact

scholarly journals A 3D Finite Element Model of Rolling Contact Fatigue for Evolved Material Response and Residual Stress Estimation

2020 ◽  
Vol 68 (4) ◽  
Author(s):  
Muhammad U Abdullah ◽  
Zulfiqar A Khan ◽  
Wolfram Kruhoeffer ◽  
Toni Blass
Keyword(s):  
Finite Element ◽  
Residual Stresses ◽  
Finite Element Model ◽  
Structural Changes ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Element Model ◽  
Rolling Contact ◽  
3D Finite Element ◽  
Semi Empirical

AbstractRolling bearing elements develop structural changes during rolling contact fatigue (RCF) along with the non-proportional stress histories, evolved residual stresses and extensive work hardening. Considerable work has been reported in the past few decades to model bearing material hardening response under RCF; however, they are mainly based on torsion testing or uniaxial compression testing data. An effort has been made here to model the RCF loading on a standard AISI 52100 bearing steel with the help of a 3D Finite Element Model (FEM) which employs a semi-empirical approach to mimic the material hardening response evolved during cyclic loadings. Standard bearing balls were tested in a rotary tribometer where pure rolling cycles were simulated in a 4-ball configuration. The localised material properties were derived from post-experimental subsurface analysis with the help of nanoindentation in conjunction with the expanding cavity model. These constitutive properties were used as input cyclic hardening parameters for FEM. Simulation results have revealed that the simplistic power-law hardening model based on monotonic compression test underpredicts the residual generation, whereas the semi-empirical approach employed in current study corroborated well with the experimental findings from current research work as well as literature cited. The presence of high compressive residual stresses, evolved over millions of RCF cycles, showed a significant reduction of maximum Mises stress, predicting significant improvement in fatigue life. Moreover, the predicted evolved flow stresses are comparable with the progression of subsurface structural changes and be extended to develop numerical models for microstructural alterations. Graphic Abstract

A Coupled Multibody Finite Element Model for Investigating Effects of Surface Defects on Rolling Contact Fatigue

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Zamzam Golmohammadi ◽  
Farshid Sadeghi
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Surface Defects ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Internal Stresses ◽  
Fe Model ◽  
Elastic Plastic ◽  
Pile Up

A coupled multibody elastic–plastic finite element (FE) model was developed to investigate the effects of surface defects, such as dents on rolling contact fatigue (RCF). The coupled Voronoi FE model was used to determine the contact pressure acting over the surface defect, internal stresses, damage, etc. In order to determine the shape of a dent and material pile up during the over rolling process, a rigid indenter was pressed against an elastic plastic semi-infinite domain. Continuum damage mechanics (CDM) was used to account for material degradation during RCF. Using CDM, spall initiation and propagation in a line contact was modeled and investigated. A parametric study using the model was performed to examine the effects of dent sharpness, pile up ratio, and applied load on the spall formation and fatigue life. The spall patterns were found to be consistent with experimental observations from the open literature. Moreover, the results demonstrated that the dent shape and sharpness had a significant effect on pressure and thus fatigue life. Higher dent sharpness ratios significantly reduced the fatigue life.

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