... on pure aluminum Al-99.999 using high-speed and scanning electron microscope photography were observed. The eroded surface morphology was in the form of large swellings (hundreds of micrometers), which embodies the plastic flow. Results indicate that large swelling regions formed in a few seconds...

.... 12 05 2009 06 12 2009 06 04 2010 06 04 2010 copper flanges gaskets laminar flow mechanical contact plastic flow polymer films steel turning (machining) tribology metal gasket seal thin polymer film real contact area gas leakage test contact pressure...

... in the plastic flow regime. Shoulder-shoulder asperity contact gives rise to a slanted contact force comprising tangential and normal components. Each force component comprises elastic and plastic terms, which upon statistical summation yields the force component for the elastic and plastic forces...

... temperature rise as well as reduction in quantity of oil required for lubrication provided thin continuous film exists at the contact. 27 02 2007 08 10 2007 24 04 2008 cold rolling lubricating oils lubrication plastic flow shear deformation slip thermomechanical treatment...

... . The wear rate in the 1 – 10 MPa regime was found to be very small and within the measuring instrument resolution and also insensitive to contact pressure. The regime is designated ultramild wear. Lack of plastic flow, minimal fragmentation of silicon particles, and the presence of undistorted voids...

... manuscript received August 26, 2004. Review conducted by: Q. Wang. 05 May 2004 26 August 2004 07 02 2005 mechanical contact stiction copper sliding friction steel elasticity plasticity plastic flow Spherical Contact Elastic-Plastic Contact Junction Growth Friction...

...). 24 November 2003 11 March 2004 09 11 2004 copper metallic thin films indentation internal stresses plastic flow microhardness digital simulation finite element analysis Nanoindentatoin Finite Element Methods Nanohardness It is known that the mechanical...

... distribution yield strength plastic flow simulation stress analysis An enhancement of the tribological performance and functionality of contacting surfaces is commonly achieved through deposition of thin surface layers (overcoats) exhibiting high hardness and low coefficient of friction. Analysis...

... reasons, Von Mises criterion is used, and the model chosen is that of Prandtl-Reuss. The hardening law is described by the Swift’s law σ VM = B . C + ε p n (3.1). The plastic flow law can then be formulated according to Lamai^tre and Chaboche 27 as follows: δ ε...

...Yongwu Zhao,; David M. Marietta, and; L. Chang [S0742-4787(00)02602-3] mechanical contact plastic flow elastic deformation interface roughness tribology The authors thank Dr. Etsion’s interest in the paper. We agree with Dr. Etsion that with a higher contact pressure a smaller...

...Izhak Etsion [S0742-4787(00)022002-5] Yongwu Zhao, D. M. Maietta, and L. Chang, 2000, “An Asperity Microcontact Model Incorporating the Transition From Elastic Deformation in Fully Plastic Flow,” ASME JOURNAL OF TRIBOLOGY , Vol. 122, No. 1, pp. 86–93. micromechanics mechanical...

...Yongwu Zhao; David M. Maietta; L. Chang This paper presents an elastic-plastic asperity microcontact model for contact between two nominally flat surfaces. The transition from elastic deformation to fully plastic flow of the contacting asperity is modeled based on contact-mechanics theories...