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Elastic contact in the presence of cohesive fluids

D A Hills-+, A Sackfield++ and C E Truman§

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The contact law and consequent pressure distribution for contact between elastic spheres with a meniscus of cohesive fluid are found. The results reveal quite a different relationship both from conventional dry contact and from contacts whereby solid-solid adhesive forces apply. The results are of direct applicability to the study of agglomerates. A direct indication of the pull-off force between adjacent spheres is given, but for a numerical evaluation of this force the Kelvin curvature and contact angle are needed.


PACS

68.35.Np Adhesion

62.10.+s Mechanical properties of liquids

Subjects

Soft matter, liquids and polymers

Surfaces, interfaces and thin films

Dates

Issue 12 (21 June 1998)

Received 28 January 1998



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