...Shuyun Jiang; Yongjin Zhu Axial static stiffness is a main technical indicator for the ball screw feed drive system, and the elastic deformation outside the Hertz contact zone of the system affects its axial static stiffness. However, the influence of elastic deformation outside the Hertz contact...

... at the dimensionless contact time of 0.21. After the highest temperature is reached, the temperature of the fixed point on the moving flat decays rapidly due to thermal conduction. 01 05 2010 18 03 2011 25 07 2011 25 07 2011 discs (structures) elastic deformation friction hardening...

... computational complexity elastic deformation flow simulation grid computing mesh generation A number of recent papers and discussions have convinced the author to write the present Technical Brief. It is intended to remind authors and reviewers of calculational papers that the terms “complexity...

... sectional shape. Contact pressure between the journal surfaces and the bearing surfaces with microgroove was calculated using the Hertzian contact model and the effects of elastic deformation of bearing surface due to hydrodynamic and contact pressures were considered. A numerical calculation model...

... by applying the simple model based on the single main bearing housing to calculate the elastic deformation of main bearing surface. Zhang , C. , 1999 , “ Fast Analysis of Crankshaft Bearings With a Database Including Shear Thinning and Viscoelastic Effects ,” Tribol. Trans. 1040-2004 , 42 ( 4...

..., this is not true since the contact pressure is not zero at the outlet where the film thickness is small and asperities are in contact. 17 12 2009 06 05 2010 24 06 2010 24 06 2010 crystallographic shear elastic deformation hydrodynamics lubrication surface roughness...

... at the interface indicates that the present fractal model for the contact stiffness is appropriate and the theoretical contact stiffness is consistent with the experimental data. 17 09 2008 21 09 2009 12 11 2009 12 11 2009 cast iron elastic deformation fractals mechanical contact...

... to evaluate the elastic deformation of either the spherical or nonspherical bearing surfaces. A fixed-tracked method was also developed to simulate the complex morphology introduced by moving the interface of the nonspherical bearing surfaces. The general methodology for the nonspherical bearing was first...

...Tomoya Sakaguchi; Kazuyoshi Harada In order to investigate cage stress in tapered roller bearings, a dynamic analysis tool considering both the six degrees of freedom of motion of the rollers and cage and the elastic deformation of the cage was developed. Cage elastic deformation is equipped using...

... continuous piecewise smoothly quadratic (Q block). The undeformed elastic blocks are spatially symmetric; their elastic deformation is simplified by taking it to be affine, with the degree of shape asymmetry linearly increasing with shear stress. We find that the V block exhibits nonzero Coulomb-type...

...K. Willner The effect of dry metallic friction can be attributed to two major mechanisms: adhesion and ploughing. While ploughing is related to severe wear and degradation, adhesion can be connected to pure elastic deformations of the contacting bodies and is thus the predominant mechanism...

...Dong-Hyun Lee; Young-Cheol Kim; Kyung-Woong Kim To obtain the foil bearing characteristics, the fluid film pressure must be coupled with the elastic deformation of the foil structure. However, all of the structural models thus far have simplified the foil structure without consideration of its...

...W. Habchi; D. Eyheramendy; P. Vergne; G. Morales-Espejel The solution of the elastohydrodynamic lubrication (EHL) problem involves the simultaneous resolution of the hydrodynamic (Reynolds equation) and elastic problems (elastic deformation of the contacting surfaces). Up to now, most...

... in this regime of elastic deformations. At higher normal loads ( P * > 50 ) , corresponding to the elastic-plastic regime of deformations, the static friction coefficient is not affected by surface roughness and seems to follow a universal law as predicted theoretically by Brizmer et al. in Ref...

... was positioned either in horizontally simplified or anatomically with an inclination angle of 45 deg ( 23 ), as shown in Figs. 1a 1b . The subchondral bone underneath the cement is excluded since its effect on local elastic deformation for metal-on-metal hip joint implant is negligible ( 21...

... Model Incorporating the Transition From Elastic Deformation to Fully Plastic Flow ,” ASME J. Tribol. 0742-4787 10.1115/1.555332 , 122 , pp. 86 – 93 . Kragel’skii , I. V. , and Mikhin , N. M. , 1988 , Handbook of Friction Units of Machines , ASME , New York . Bush , A. W...

... p m , which marks the onset of yield, 1 ( J 2 ) max = 0.5 p m where J 2 is the second invariant of the stress field. 28 03 2006 20 05 2007 aluminium alloys elastic deformation eutectic alloys lubrication plastic flow silicon...

...Yuchuan Liu; W. Wayne Chen; Dong Zhu; Shuangbiao Liu; Q. Jane Wang An elastohydrodynamic lubrication (EHL) model for coated surfaces in point contacts has been developed by combining the elastic deformation formulation for the coated surfaces with an EHL model. Inverse fast Fourier transform (IFFT...

... and elastic deformation. However, wear has rarely been incorporated into the numerical models used as predictive tools in engineering practice. This paper presents a numerical approach to simulate the wear process based on the deterministic mixed elastohydrodynamic lubrication (EHL) model developed...

... asperities. 05 04 2006 03 01 2007 elastoplasticity mechanical contact finite element analysis surface roughness plastic deformation elastic deformation friction cylinder-on-flat contact multi-asperity contact elastic-plastic deformation interaction between asperities...