... austenite shallow dimples smooth grooves saplings abrasion plastic shear plastic deformation adhesion friction wear wear mechanisms Additive manufacturing (AM) is an innovative manufacturing process applied to produce products with complex geometries and various materials like metals...

... of the proposed model are validated by the experiments. The characteristics of combined seals are discussed under different interference-fit conditions. The following conclusions can be obtained: The plastic deformation occurs in the L ring with the PTFE base. Compared with the results where only the elastic...

... and Numerical Modelling ,” Wear , 260 ( 7–8 ), pp. 803 – 814 . 10.1016/j.wear.2005.04.007 elasticity elastoplasticity fatigue hardening mechanical contact numerical analysis plastic deformation contact mechanics rolling contact elastic-plastic contact plasticity residual strain...

... contact with elastic-plastic deformation deviates from “classical theories” for dynamic elastic and quasi-static elastic-plastic contacts as the dimensionless vertical initial velocity of the sphere increases. The results are applied to optimize the slider-disk interface in a hard disk drive with respect...

... transmit substantial power under heavy loading conditions that may possibly induce plastic deformation of contacting surfaces. Moreover, the roughness of machined surfaces is usually of the same order of magnitude as, or greater than, the average EHL film thickness. Consequently, most components operate...

... with considerable plastic deformation of ferrite lamellae compared with austenitic and bainitic steels. In the case of bainitic steel, the absence of any significant smearing of oxide debris, combined with the presence of some distributed tungsten from the ball, contributed to severe wear. On the other hand...

... plastic deformation, while ZrB 2 -containing composite coating involves only mild abrasive and fatigue wear when sliding against the GCr15 counterpart. 08 07 2010 05 11 2010 15 12 2010 15 12 2010 abrasion adhesion coatings crystal microstructure fatigue microhardness...

...Scott R. Hummel; Jeffrey Helm Galling is a severe form of mechanical surface damage, commonly observed in metals, that is accompanied by adhesive transfer, extensive plastic deformation, and/or cold-welding of the mating surfaces. It can lead to seizure or rapid failure of machine components...

... contribute in carrying the imposed load. The plastic deformation of asperities during the running-in is taken into consideration. In the application of the load-sharing method, it is often assumed that asperity heights have a Gaussian distribution. This assumption has been relaxed in this model. Prediction...

... limit, causing considerable plastic deformation, which may not only permanently change the surface profiles and contact geometry but also alter material properties through work hardening as well. In the present study, a three-dimensional plasto-elastohydrodynamic lubrication (PEHL) model has been...

... with grease, corn oil, VG100, and VG32 were used to investigate the lubrication characteristics. During the test, temperature was measured in the specimen by a K-type thermocouple to determine the temperature increase induced by heat generation due to plastic deformation. In the present investigation...

...Shuyun Jiang; Yunjian Zheng; Hua Zhu A general contact stiffness model is proposed in this paper to study the contacts between rough surfaces of machined plane joints. The proposed model uses fractal geometry for surface topography description, elastic-plastic deformation of contacting asperities...

... substantial junction growth and energy dissipation mainly in the first loading cycle. The so-called “slip amplitude” is found to be attributed to residual tangential plastic deformation rather than to interfacial slip. Elastic shake-down is observed for the 2.5% hardening steel spheres while plastic shake...

... Surftest SV602 profiler with a 5   μ m stylus (996133-996153) and the autodrive unit was used to measure an evaluation length of 5.0 mm at a speed of 0.2 mm/s and a pitch of 0.8   μ m . 21 11 2008 27 01 2009 09 03 2009 aluminium creep friction plastic...

... aluminum alloy; the contact resistance is considered mainly due to the surface oxide film. The simulation results indicate that the transient contact model is able to capture the history of plastic deformation accumulation and the material melting inception. Tunneling resistivity for TiO 2...

... 01 04 2008 25 12 2008 05 03 2009 elastoplasticity friction plastic deformation shear strength frictional contact elliptical asperity The contact behavior of two rough surfaces is highly complex. However, an understanding of this behavior is pivotal in gaining...

..., it is possible for yielding to occur due to adhesion alone, without an external load. A curve-fit formula is given for the yield load as a function of an adhesion parameter for different Poisson’s ratios. Results are then obtained for the onset of plastic deformation away from the axis of symmetry using...

... different plasticity models for copper: a conventional isotropic, homogeneous J 2 plasticity model and a continuum crystal plasticity model. Using crystal plasticity, the dependence of crystallographic orientation on plastic deformation and energy dissipation can be determined. The relative trends predicted...

... 2008 conjugate gradient methods elastoplasticity fast Fourier transforms machine components mechanical contact plastic deformation thermoelasticity thermomechanical treatment work hardening elasto-plastic contact thermal softening heat partition Most of the energy loss...

... then completely independent of the geometric surface parameters and is determined by material properties alone, at least if the predicted plastic deformation occurs at a length scale larger than the atomic scale. Bowden , F. P. , 1957 , “ A Review of the Friction of Dolids ,” Wear 0043-1648...