A statistical model of elasto-plastic asperity contact between rough surfaces

Jackson, Robert L.; Green, Itzhak

doi:10.1016/j.triboint.2005.09.001

Cited by 241 publications

(138 citation statements)

References 17 publications

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“…The results from both models show the same nearly linear change in the real contact area as a function of load, and also quantitatively compare very well. Note that this confirms the nearly linear trend, of many previous rough surface contact models as well [1,17,18]. Also shown is a conventional model that calculates the contact pressure as the hardness (2.8·S y ) [19,20].…”

Section: Resultssupporting

confidence: 84%

A Comparison of the Predictions of a Finite Element Model and Multiscale Model for a Rough MEMS Electrical Contact

Jackson

Liu

Leray

2013

2013 IEEE 59th Holm Conference on Electrical Contacts (Holm 2013)

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Rough surface contact is difficult to model effectively due to multiple scales of detail that need to be considered. This work presents the results of a multiscale rough surface contact model in comparison to a finite element based deterministic model for the electrical contact of a MEMS microswitch. The real area of contact and electrical contact resistance are predicted and compared as a function of normal load. The results show good quantitative and qualitative correlation between the two methods.As expected, the contact area increases nominally linearly with load, while the contact resistance decreases with load. It is notable though that the contact pressure is up to 16% higher than the hardness (2.8 times yield strength), and could be even higher for other surfaces.

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Section: Resultssupporting

confidence: 84%

A Comparison of the Predictions of a Finite Element Model and Multiscale Model for a Rough MEMS Electrical Contact

Jackson

Liu

Leray

2013

2013 IEEE 59th Holm Conference on Electrical Contacts (Holm 2013)

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“…[4] and [5]. Models that intend to include multiple size-scales normally deviate from the Greenwood & Williamson approach.…”

Section: Introductionmentioning

confidence: 99%

Implementation and applications of a finite-element model for the contact between rough surfaces

Poulios

Klit

2013

Wear

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“…Kogut and Etsion [11,12] (KE Model) presented empirical coefficients for relations between dimensionless contact parameters (real contact area, contact load and mean pressure) and interference. Jackson and Green (JG model) performed similar research [13,14] using denser grid of elements than Kogut and Etsion for stick contact conditions. JG model is based on yield stress, contrary to KE model based on hardness.…”

Section: Introductionmentioning

confidence: 94%

Experimental Investigation of a Hemisphere Contact with a Hard Flat

Pawlus

Zelasko²,

Dzierwa

et al. 2018

Teh. vjesn.

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Abstract:In this paper experimental investigation is presented to study the contact of a deformable hemisphere with a hard flat. Hemispheres were made from steel and copper, but flat from silicon carbide. During contact, deformation of hemisphere was measured. After experiment, plastic contact area of hemisphere was estimated on the basis of surface topography measurement by white light interferometer. The experimental results were compared with the theoretical models, showing good agreement.

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A statistical model of elasto-plastic asperity contact between rough surfaces

Cited by 241 publications

References 17 publications

A Comparison of the Predictions of a Finite Element Model and Multiscale Model for a Rough MEMS Electrical Contact

A Comparison of the Predictions of a Finite Element Model and Multiscale Model for a Rough MEMS Electrical Contact

Implementation and applications of a finite-element model for the contact between rough surfaces

Experimental Investigation of a Hemisphere Contact with a Hard Flat

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