The elliptical adhesive contact is studied experimentally utilizing two hemicylinders of elastomeric poly(dimethylsiloxane) (PDMS). Experimental results are compared with the recent approximate Johnson–Kendall–Roberts (JKR) theory for elliptical contacts, and the deviation of the experiments from this theory is discussed in detail. To do this, the cylinders are placed with different skew angles with respect to each other in order to emulate the effect of orientation. The maximum adhesion force and the size of the contact zone are determined experimentally under the action of surface energy. The difference of the maximum adhesion force between experiments and theory is found to increase as the contact area goes from mildly elliptical to slim elliptical contact. Similarly, it is observed that the contact area can be approximated to have elliptical geometry for a wide range of skew angles while a deviation is observed for slim elliptical contacts. Moreover, the reduction in the contact area is observed to be nonself-similar during detachment from an elliptical shape to a circular one.
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1 June 2010
Research Article|
June 02 2010
An experimental analysis of elliptical adhesive contact
Bilsay Sümer;
Bilsay Sümer
Department of Mechanical Engineering, NanoRobotics Laboratory,
Carnegie Mellon University
, Pittsburgh, Pennsylvania 15213, USA
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Cagdas D. Onal;
Cagdas D. Onal
a)
Department of Mechanical Engineering, NanoRobotics Laboratory,
Carnegie Mellon University
, Pittsburgh, Pennsylvania 15213, USA
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Burak Aksak;
Burak Aksak
Department of Mechanical Engineering, NanoRobotics Laboratory,
Carnegie Mellon University
, Pittsburgh, Pennsylvania 15213, USA
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Metin Sitti
Metin Sitti
Department of Mechanical Engineering, NanoRobotics Laboratory,
Carnegie Mellon University
, Pittsburgh, Pennsylvania 15213, USA
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a)
Author to whom correspondence should be addressed. Electronic mail: [email protected].
J. Appl. Phys. 107, 113512 (2010)
Article history
Received:
August 19 2009
Accepted:
April 18 2010
Citation
Bilsay Sümer, Cagdas D. Onal, Burak Aksak, Metin Sitti; An experimental analysis of elliptical adhesive contact. J. Appl. Phys. 1 June 2010; 107 (11): 113512. https://doi.org/10.1063/1.3428494
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