... the fretting wear between deformable crossed parabolic cylinders. Fretting is achieved by the application of a periodic displacement-controlled load, while the contact pair is defined as the same material, i.e., carbon steel/carbon steel, copper alloy/copper alloy, and aluminum alloy/aluminum alloy. Meanwhile...

... contact model under frictional condition is proposed to simulate both tangential displacement-controlled fretting and the evolution of the energy dissipation in a load cycle. By deriving the theoretical of the normal and tangential contact course of the model, the load–displacement curves during initial...

...Robert L. Jackson; Santosh Angadi In many devices and applications, electrical contacts are exposed to vibrations, sliding, or rolling conditions and are prone to fretting-based degradation. Thus, lubricants are often employed in such contacts to reduce sliding wear and fretting corrosion. However...

...Huaidong Yang; Itzhak Green This article derives analytical solutions to calculate the wear volume at the initiation of fretting motion and its early progression over the first few oscillation cycles. The Archard-based model considers a deformable hemisphere that is contact with a deformable flat...

...Mengjiao Wang; Yunxia Wang; Jianzhang Wang; Na Fan; Fengyuan Yan Super duplex stainless steel (SDSS) has excellent mechanical properties and corrosion resistance. However, currently, there are few researches conducted on its fretting wear performance. This paper studies the influence of different...

...Huaidong Yang; Itzhak Green This work presents a finite element study of a two-dimensional (2D) plane strain fretting model of a half cylinder in contact with a flat block under oscillatory tangential loading. The two bodies are deformable and are set to the same material properties (specifically...

...C. H. Sathisha; B. N. Ravikumar; K. Anand; T. Shalini Structural parts in gas turbines undergo fretting wear, and as clearances open up, it turns into impact wear. Uncoated cobalt-based substrates that are used in such applications show poor resistance to fretting/impact damage and undergo...

... 2015 15 06 2015 Contact Contact area Contact mechanics Rolling Rolling fatigue Surface fatigue Surface properties Surface roughness Wear Characterization Asperities Fretting For rolling–sliding contacts, an elastic deformation and a flattening of the contact area occur...

...Benjamin D. Leonard; Pankaj Patil; Trevor S. Slack; Farshid Sadeghi; Sachin Shinde; Marc Mittelbach A new approach for modeling fretting wear in a Hertzian line contact is presented. The combined finite-discrete element method (FDEM) in which multiple finite element bodies interact as distinct...

... performance, it is scientifically interesting to assess the tribological properties, and therefore the objectives of the present work include, to determine the role of W additions in improving the fretting wear resistance of Cu for electrical applications, to determine the optimum concentration for W...

...A. Ovcharenko; I. Etsion The contact area, friction force, and relative displacement evolution at the very early stage of fretting are investigated experimentally. Copper and steel spheres of various diameters are loaded against a hard sapphire flat by a range of normal loads deep into the elastic...

...L. Gallego; D. Nélias The paper presents a numerical model to investigate fretting wear either under partial or gross slip conditions. An efficient three-dimensional elastic–static contact model to solve both the normal contact problem and the tangential contact problem is presented. The contact...

...C.-H. Goh; D. L. McDowell; R. W. Neu The role of microstructure is quite significant in fretting because the scale of plastic strain localization near the surface is on the order of key microstructure features. A dual-phase Ti-6Al-4V alloy that tends to be susceptible to fretting is considered...

... oscillations mechanical contact surface phenomena sliding friction Hertzian Line Contact Fretting Oscillatory Transient Temperature The knowledge of surface temperatures in dry or lubricated sliding contacts plays a vital role in the design of machine elements. Much of the past research has...

... controlled fretting-only experiments. In particular, the effect of slip displacement amplitude and number of fretting cycles on the evolution of grain morphology, grain orientation, misorientation distribution, composition, and microhardness is investigated using electron backscatter diffraction (EBSD...

...B. Podgornik; M. Kalin; J. Vizˇintin; F. Vodopivec, Professor In fretting wear, the microstructure and the mechanical properties of the surface and subsurface layer depend significantly on the temperature field produced in the fretting zone. Information reported in the literature indicate...

... polycrystalline alloys. High cycle fatigue induced failures in aircraft gas turbine and rocket engine turbopump blades is a pervasive problem. Blade attachment regions are prone to fretting fatigue failures. Single crystal nickel base superalloy turbine blades are especially prone to fretting damage because...