NDLI: Improvement of Rolling Contact Fatigue Life by a Preliminary Loading in Elastic-Plastic Domain

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Cretu, Spiridon
Copyright Year	2008
Abstract	An analysis model has been developed to model the nonlinear strain rate dependent deformation of rolling bearing steel stressed in the elastic-plastic domain. The model is developed in the frame of the incremental theory of plasticity by using the von Mises yield criterion and Prandtl-Reuss equations. By considering the isotropic and non-linear kinematic hardening laws of Lemaitre-Caboche, the model accounts for the cyclic hardening phenomena. To attain the final load of each loading cycle, the two bodies are brought into contact incrementally. For each new load increment new increments for the components of stress and strain tensors, but also increments of residual stresses, are computed for each point of the 3D mesh. Both, the new contact geometry and residual stresses distributions, are further considered as initial values for the next loading cycle, the incremental technique being reiterated. The cyclic evaluation process of both, plastic strains and residual stresses is performed until the material shakedowns. The experimental part of the paper regards to the rolling contact fatigue tests carried out on two groups of line contact test specimens and on two groups of deep groove ball bearings. In both cases, the experimental data reveal more than two times greater fatigue life for the group with induced residual stresses versus the life of the reference group. The von Mises equivalent stress is considered in Ioannides-Harris rolling contact fatigue model to obtain theoretical lives. The theoretical analysis revealed greater fatigue lives for the test specimens and for the ball bearings groups with induced residual stresses than the fatigue lives of the corresponding reference groups.
Sponsorship	International
Starting Page	11
Ending Page	21
Page Count	11
File Format	PDF
ISBN	9780791848388
DOI	10.1115/ESDA2008-59137
e-ISBN	0791838277
Volume Number	Volume 4: Fatigue and Fracture; Fluids Engineering; Heat Transfer; Mechatronics; Micro and Nano Technology; Optical Engineering; Robotics; Systems Engineering; Industrial Applications
Conference Proceedings	ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis
Language	English
Publisher Date	2008-07-07
Publisher Place	Haifa, Israel
Access Restriction	Subscribed
Subject Keyword	Fatigue life Cycles Fatigue testing Deformation Ball bearings Rolling contact Fatigue Theoretical analysis Residual stresses Steel Stress Geometry Hardening Tensors Rolling bearings Kinematics Plasticity
Content Type	Text
Resource Type	Article

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