Adhesive contacts of rough elliptical punches

dc.contributor.authorLi, Qiang
dc.contributor.authorWilhayn, Josefine
dc.contributor.authorLyashenko, Iakov A.
dc.contributor.authorPopov, Valentin L.
dc.date.accessioned2022-09-07T13:22:02Z
dc.date.available2022-09-07T13:22:02Z
dc.date.issued2022-03-17
dc.description.abstractWe numerically study adhesive contact between an elastic half-space and a rigid punch with elliptic shape and superimposed roughness. Simulation is carried out using the Fast Fourier Transform-assisted Boundary Element Method for JKR-type adhesive contact. Both regular roughness (in form of a two-dimensional wave) and random fractal roughness are studied. It is confirmed that the main governing parameter determining different modes of adhesion is the Johnson parameter. For under-critical values of the Johnson parameter (large enough amplitude of roughness), the adhesive force increases with the normal force during compression stage, until it reaches a plateau. The evolution of the contact area during the pull-off shows different configurations depending on the roughness and the pre-loading. For large Johnson parameters the detachment begins from the ends of the major axis of the ellipse and propagates to the center of the contact. In a narrow interval near the critical Johnson parameter, the detachment can also start from the center of ellipse or from the ends of minor axis, if the pre-loading is not too large (so that the complete compact contact is not established). The maximum pull-off force (force of adhesion) is also a function of the Johnson parameter. Enhanced adhesion is observed when the maximum pull-off force is larger than that for a flat-ended punch. In experiment, steel flat indenters with different elliptical shapes are indented into soft rubber sheets. It is observed that the detachment begins from the edge of minor axis of ellipse in all cases, contrary to the results of numerical simulation and analytical theory.en
dc.identifier.eissn1873-3972
dc.identifier.issn0093-6413
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/17383
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-16164
dc.language.isoenen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.ddc620 Ingenieurwissenschaften und zugeordnete Tätigkeitende
dc.subject.otheradhesionen
dc.subject.otherellipseen
dc.subject.otherroughnessen
dc.subject.othernumerical simulationen
dc.subject.otherBoundary Element Methoden
dc.titleAdhesive contacts of rough elliptical punchesen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber103880en
dcterms.bibliographicCitation.doi10.1016/j.mechrescom.2022.103880en
dcterms.bibliographicCitation.journaltitleMechanics Research Communicationsen
dcterms.bibliographicCitation.originalpublishernameElsevieren
dcterms.bibliographicCitation.originalpublisherplaceAmsterdamen
dcterms.bibliographicCitation.volume122en
tub.accessrights.dnbdomain*
tub.affiliationFak. 5 Verkehrs- und Maschinensysteme::Inst. Mechanik::FG Systemdynamik und Reibungsphysikde
tub.affiliation.facultyFak. 5 Verkehrs- und Maschinensystemede
tub.affiliation.groupFG Systemdynamik und Reibungsphysikde
tub.affiliation.instituteInst. Mechanikde
tub.publisher.universityorinstitutionTechnische Universität Berlinen

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