THE JKR-ADHESIVE NORMAL CONTACT PROBLEM OF AXISYMMETRIC RIGID PUNCHES WITH A FLAT ANNULAR SHAPE OR CONCAVE PROFILES

Emanuel Willert, Qiang Li, Valentin L. Popov

DOI Number
10.22190/FUME1603281W
First page
281
Last page
292

Abstract

The JKR-adhesive frictionless normal contact problem is solved for the flat annular and the conical or spherical concave rigid punch indenting an elastic half space. The adhesive solution can be derived analytically from the non-adhesive one, the latter one being calculated by the boundary element method. It is found that the annular flat punch will always start to detach at the outer boundary. The pull-off forces for both concave punch shapes almost do not depend on the pull-off boundary regime and can be significantly larger than the pull-off force for the cylindrical flat punch.

Keywords

Contact Mechanics, Axis-symmetry, Annular Contact Area, Adhesion, JKR-theory, Boundary Element Method, Concave Rigid Punch, Flat Annular Punch

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References

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DOI: http://dx.doi.org/10.22190/FUME1603281W

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