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doi:10.22028/D291-38379
Titel: | Analytical and numerical results for the elasticity and adhesion of elastic films with arbitrary Poisson’s ratio and confinement |
VerfasserIn: | Müller, Christian Müser, Martin H. |
Sprache: | Englisch |
Titel: | The Journal of Adhesion |
Verlag/Plattform: | Taylor & Francis |
Erscheinungsjahr: | 2022 |
Freie Schlagwörter: | Adhesion crack propagation elastomer modeling theory thin films |
DDC-Sachgruppe: | 500 Naturwissenschaften |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | We present an approximate, analytical treatment for the linearly elastic response of a film with arbitrary Poisson's ratio ν, which is indented by a flat cylindrical punch while resting on a rigid foundation. Our approach is based on a simple scaling argument allowing the vast changes of the elastomer’s effective modulus E¯¯¯ with the ratio of film height h and indenter radius a to be described with a compact, analytical expression. This yields exact asymptotics for large and small reduced film heights h/a, whereby it also reproduces the observation that E¯¯¯(h/a) has a pronounced minimum for ν>0.49 at h/a≈1.6. Using Green’s function molecular dynamics (GFMD), we demonstrate that the predictions for E¯¯¯(h/a) are reasonably correct and generate accurate reference data for effective modulus and pull-off force. GFMD also reveals that the nature of surface instabilities occurring during stable crack growth as well as the crack initiation itself depend sensitively on the way how continuum mechanics is terminated at small scales, that is, on parameters beyond the two dimensionless numbers h/a and ν defining the continuum problem. |
DOI der Erstveröffentlichung: | 10.1080/00218464.2022.2038580 |
URL der Erstveröffentlichung: | http://dx.doi.org/10.1080/00218464.2022.2038580 |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-383798 hdl:20.500.11880/34623 http://dx.doi.org/10.22028/D291-38379 |
ISSN: | 1545-5823 0021-8464 |
Datum des Eintrags: | 2-Dez-2022 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Materialwissenschaft und Werkstofftechnik |
Professur: | NT - Prof. Dr. Martin Müser |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
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Analytical and numerical results for the elasticity and adhesion of elastic films with arbitrary Poisson s ratio and confinement.pdf | 2,89 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons