scholarly journals Effect of slip to roll ratio on cyclic plastic deformation response at subsurface during rolling contact fatigue

2021 ◽  
pp. 100058
Author(s):  
Surajit Kumar Paul ◽  
Mayank Tiwari ◽  
Xiao Zhongmin
Keyword(s):  
Plastic Deformation ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Cyclic Plastic ◽  
Deformation Response ◽  
Cyclic Plastic Deformation

The Strength of Surfaces in Rolling Contact

1989 ◽  
Vol 203 (3) ◽  
pp. 151-163 ◽  
Author(s):  
K L Johnson
Keyword(s):  
Plastic Deformation ◽  
Load Capacity ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Shear Cracks ◽  
Fatigue Wear ◽  
Modes Of Failure ◽  
Wheel Rolling ◽  
Traction Drives ◽  
Cyclic Plastic Deformation

The common engineering applications of rolling contact are reviewed: the wheel, rolling bearings, traction drives, gears and cams. It is shown that increasing the rigidity of the materials and decreasing the conformity of the surfaces reduces the resistance to rolling, but only at the expense of higher contact stress. The principal modes of failure are described: plastic deformation, contact fatigue, wear, scuffing and corrugation. Recent research into plastic deformation and fatigue is discussed. It is concluded that, if wear and scuffing are controlled by adequate lubrication and surface finish, and clean steel is used, the load capacity and life are governed by the nucleation of micro shear cracks through the action of cyclic plastic deformation.

Cyclic Constitutive Response and Effective S–N Diagram of M50 NiL Case-Hardened Bearing Steel Subjected to Rolling Contact Fatigue

2015 ◽  
Vol 137 (4) ◽  
Author(s):  
Abir Bhattacharyya ◽  
Anup Pandkar ◽  
Ghatu Subhash ◽  
Nagaraj Arakere
Keyword(s):  
Fatigue Strength ◽  
Plastic Strain ◽  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Contact ◽  
Fe Model ◽  
Mean Stress ◽  
Cyclic Plastic ◽  
Constitutive Response ◽  
Cyclic Plastic Strain

A combined experimental and numerical method is developed to estimate the continuously evolving cyclic plastic strain amplitudes in plastically deformed subsurface regions of a case-hardened M50 NiL steel rod subjected to rolling contact fatigue (RCF) over several hundred million cycles. The subsurface hardness values measured over the entire plastically deformed regions and the elastoplastic von Mises stresses determined from the three-dimensional (3D) Hertzian contact finite element (FE) model have been used in conjunction with Neuber's rule to estimate the evolved cyclic plastic strain amplitudes at various points within the RCF-affected zone. The cyclic stress–strain plots developed as a function of case depth revealed that cyclic hardening exponent of the material is greater than the monotonic strain-hardening exponent. Effective S–N diagram for the RCF loading of the case-hardened steel has been presented and the effect of compressive mean stress on its fatigue strength has been explained using Haigh diagram. The compressive mean stress correction according to Haigh diagram predicts that the allowable fatigue strength of the steel increases by a factor of two compared to its fatigue limit before mean stress correction, thus potentially allowing the rolling element bearings to operate over several hundred billion cycles. The methodology presented here is generalized and can be adopted to obtain the constitutive response and S–N diagrams of both through- and case-hardened steels subjected to RCF.

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