Search Results - "GREENWOOD, J. A"

Inclusion of “interaction” in the Greenwood and Williamson contact theory by Ciavarella, M., Greenwood, J.A., Paggi, M.

“…Recent direct implementation of asperity theories is reinterpreted here to formulate an improved version of the Greenwood and Williamson (GW) theory with the…”
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The Graded Incomplete Letters Test (GILT): a rapid test to detect cortical visual loss, with UK Biobank implementation by Yong, KXX, Petzold, A, Foster, P, Young, A, Bell, S, Bai, Y, Leff, AP, Crutch, S, Greenwood, JA

“…Impairments of object recognition are core features of neurodegenerative syndromes, in particular posterior cortical atrophy (PCA; the ‘visual-variant…”
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A simplified elliptic model of rough surface contact by Greenwood, J.A.

“…Nayak's analysis of isotropic surface roughness as a random field has been extended to show that most summits are only mildly ell, the most common ratio of…”
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Some observations on Persson's diffusion theory of elastic contact by Manners, W., Greenwood, J.A.

“…Persson's work on contact between tyres and roads led him to develop a theory of elastic contact which is of potentially much wider application. It involves…”
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Adhesion of small spheres by Greenwood, J.A.

“…Bradley 1 calculated the adhesive force between rigid spheres to be 2πRΔγ, where Δγ is the surface energy of the spheres. Johnson et al. (JKR) [2] calculated…”
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Derjaguin and the DMT Theory: A Farewell to DMT? by Greenwood, J. A.

“…There is a widespread belief that in the 1970s, two conflicting theories of the adhesion of a spherical particle to a substrate were published: the JKR and DMT…”
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Oscillating adhesive contacts between micron-scale tips and compliant polymers by Wahl, K.J., Asif, S.A.S., Greenwood, J.A., Johnson, K.L.

“…Adhesion of micron-scale probes with model poly(dimethylsiloxane), PDMS, elastomers was studied with a depth-sensing nanoindenter under oscillatory loading…”
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Contact between an axisymmetric indenter and a viscoelastic half-space by Greenwood, J.A.

“…Lee & Radok introduced a simple method of solving viscoelastic contact problems by replacing the elastic modulus by the viscoelastic creep function, (Lee EH,…”
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Oscillatory loading of a viscoelastic adhesive contact by Greenwood, J.A., Johnson, K.L.

“…The cycle of loading and unloading of a spherically-tipped probe against an adhesive, viscoelastic plane specimen is studied by numerical integration of the…”
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Adhesion of elastic spheres by Greenwood, J. A.

“…(1980) performed a complete numerical solution in terms of surface forces rather than surface energy, (combining the Lennard–Jones law of force between…”
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A Greenwood & Williamson theory for line contact by Greenwood, J.A., Putignano, C., Ciavarella, M.

“…Analyses of rough surface contact sometimes study the two-dimensional problem to avoid some of the difficulties of three-dimensional contacts, or to reduce the…”
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Reflections on and Extensions of the Fuller and Tabor Theory of Rough Surface Adhesion by Greenwood, J. A.

“…The classical Fuller and Tabor theory of rough surface adhesion is reviewed, and its limited applicability noted. New results using an extension of the JKR…”
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Hertz theory and Carlson elliptic integrals by Greenwood, J A

“…Legendre's well-known elliptic integrals are not the only version of elliptic integrals. Carlson's form, developed in the late 1970s, have many advantages, and…”
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A note on Nayak's third paper by Greenwood, J.A.

“…The importance of Nayak's work on contact patches is emphasised, and a new estimate of the density of holes, and hence of contact patches, is offered. This…”
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An Adhesion Map for the Contact of Elastic Spheres by Johnson, K.L., Greenwood, J.A.

“…Several continuum mechanics models of the adhesion between elastic spheres have found application to compliant materials such as rubber and to fine particles…”
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On “Extending the Double-Hertz Model to Allow Modelling of an Adhesive Elliptical Contact” by Greenwood, J. A.

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Effect of Tabor parameter on hysteresis losses during adhesive contact by Ciavarella, M., Greenwood, J.A., Barber, J.R.

“…The Tabor parameter μ is conventionally assumed to determine the range of applicability of the classical ‘JKR’ solution for adhesive elastic contact of a…”
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On the DMT theory by Greenwood, J. A.

“…The frequent claim that the Tabor parameter μ governs the transition from the DMT theory to the JKR theory is investigated. The change from the simple surface…”
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Analysis of elliptical Hertzian contacts by Greenwood, J.A.

“…The paper compares three approximate methods of finding the area of contact, the contact pressure and the deformation in elliptical Hertzian contacts…”
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On the almost-complete contact of elastic rough surfaces: The removal of tensile patches by Greenwood, J.A.

“…The “almost-complete” contact of elastic rough surfaces is studied by the method introduced by Johnson of reducing the mean pressure below the value needed for…”
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