Please use this identifier to cite or link to this item:
doi:10.22028/D291-41230
Title: | Exploring the dynamics of viscoelastic adhesion in rough line contacts |
Author(s): | Afferrante, Luciano Violano, Guido Carbone, Giuseppe |
Language: | English |
Title: | Scientific Reports |
Volume: | 13 |
Issue: | 1 |
Publisher/Platform: | Springer Nature |
Year of Publication: | 2023 |
Free key words: | Mechanical engineering Surfaces, interfaces and thin films |
DDC notations: | 500 Science |
Publikation type: | Journal Article |
Abstract: | Modeling the adhesion of viscoelastic rough surfaces is a recent challenge in contact mechanics. Existing models have primarily focused on simple systems with smooth topography or single roughness scale due to the co-action of roughness and viscoelasticity leading to elastic instabilities and rate-dependent behavior, resulting in complex adhesion dynamics. In this study, we propose a numerical model based on a fnite element methodology to investigate the adhesion between a randomly rough profle and a viscoelastic half-plane. Approach-retraction simulations are performed under controlled displacement conditions of the rough indenter. The results demonstrate that viscous efects dampen the roughness-induced instabilities in both the approach and retraction phases. Interestingly, even when viscous efects are negligible, the pull-of stress, i.e., the maximum tensile stress required to detach the surfaces, is found to depend on the stifness modulus and maximum load reached during the approach. Furthermore, when unloading is performed from a relaxed state of the viscoelastic half-plane, both adhesion hysteresis and pull-of stress are monotonic increasing functions of the speed. Conversely, when retraction begins from an unrelaxed state of the material, the maximum pull-of stress and hysteretic loss are obtained at intermediate velocities. |
DOI of the first publication: | 10.1038/s41598-023-39932-7 |
URL of the first publication: | https://doi.org/10.1038/s41598-023-39932-7 |
Link to this record: | urn:nbn:de:bsz:291--ds-412305 hdl:20.500.11880/36979 http://dx.doi.org/10.22028/D291-41230 |
ISSN: | 2045-2322 |
Date of registration: | 28-Nov-2023 |
Faculty: | NT - Naturwissenschaftlich- Technische Fakultät |
Department: | NT - Materialwissenschaft und Werkstofftechnik |
Professorship: | NT - Prof. Dr. Martin Müser |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Files for this record:
File | Description | Size | Format | |
---|---|---|---|---|
s41598-023-39932-7.pdf | 2,95 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License