Cargando…

Indentation and Detachment in Adhesive Contacts between Soft Elastomer and Rigid Indenter at Simultaneous Motion in Normal and Tangential Direction: Experiments and Simulations

In reported experiments, a steel indenter was pressed into a soft elastomer layer under varying inclination angles and subsequently was detached under various inclination angles too. The processes of indentation and detachment were recorded with a video camera, and the time dependences of the normal...

Descripción completa

Detalles Bibliográficos
Autores principales: Lyashenko, Iakov A., Popov, Valentin L., Borysiuk, Vadym
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10603904/
https://www.ncbi.nlm.nih.gov/pubmed/37887608
http://dx.doi.org/10.3390/biomimetics8060477
_version_ 1785126707537117184
author Lyashenko, Iakov A.
Popov, Valentin L.
Borysiuk, Vadym
author_facet Lyashenko, Iakov A.
Popov, Valentin L.
Borysiuk, Vadym
author_sort Lyashenko, Iakov A.
collection PubMed
description In reported experiments, a steel indenter was pressed into a soft elastomer layer under varying inclination angles and subsequently was detached under various inclination angles too. The processes of indentation and detachment were recorded with a video camera, and the time dependences of the normal and tangential components of the contact force and the contact area, as well as the average contact pressure and average tangential stresses, were measured as functions of the inclination angle. Based on experimental results, a simple theoretical model of the indentation process is proposed, in which tangential and normal contacts are considered independently. Both experimental and theoretical results show that at small indentation angles (when the direction of motion is close to tangential), a mode with elastomer slippage relative to the indenter is observed, which leads to complex dynamic processes—the rearrangement of the contact boundary and the propagation of elastic waves (similar to Schallamach waves). If the angle is close to the normal angle, there is no slipping in the contact plane during the entire indentation (detachment) phase.
format Online
Article
Text
id pubmed-10603904
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-106039042023-10-28 Indentation and Detachment in Adhesive Contacts between Soft Elastomer and Rigid Indenter at Simultaneous Motion in Normal and Tangential Direction: Experiments and Simulations Lyashenko, Iakov A. Popov, Valentin L. Borysiuk, Vadym Biomimetics (Basel) Article In reported experiments, a steel indenter was pressed into a soft elastomer layer under varying inclination angles and subsequently was detached under various inclination angles too. The processes of indentation and detachment were recorded with a video camera, and the time dependences of the normal and tangential components of the contact force and the contact area, as well as the average contact pressure and average tangential stresses, were measured as functions of the inclination angle. Based on experimental results, a simple theoretical model of the indentation process is proposed, in which tangential and normal contacts are considered independently. Both experimental and theoretical results show that at small indentation angles (when the direction of motion is close to tangential), a mode with elastomer slippage relative to the indenter is observed, which leads to complex dynamic processes—the rearrangement of the contact boundary and the propagation of elastic waves (similar to Schallamach waves). If the angle is close to the normal angle, there is no slipping in the contact plane during the entire indentation (detachment) phase. MDPI 2023-10-07 /pmc/articles/PMC10603904/ /pubmed/37887608 http://dx.doi.org/10.3390/biomimetics8060477 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lyashenko, Iakov A.
Popov, Valentin L.
Borysiuk, Vadym
Indentation and Detachment in Adhesive Contacts between Soft Elastomer and Rigid Indenter at Simultaneous Motion in Normal and Tangential Direction: Experiments and Simulations
title Indentation and Detachment in Adhesive Contacts between Soft Elastomer and Rigid Indenter at Simultaneous Motion in Normal and Tangential Direction: Experiments and Simulations
title_full Indentation and Detachment in Adhesive Contacts between Soft Elastomer and Rigid Indenter at Simultaneous Motion in Normal and Tangential Direction: Experiments and Simulations
title_fullStr Indentation and Detachment in Adhesive Contacts between Soft Elastomer and Rigid Indenter at Simultaneous Motion in Normal and Tangential Direction: Experiments and Simulations
title_full_unstemmed Indentation and Detachment in Adhesive Contacts between Soft Elastomer and Rigid Indenter at Simultaneous Motion in Normal and Tangential Direction: Experiments and Simulations
title_short Indentation and Detachment in Adhesive Contacts between Soft Elastomer and Rigid Indenter at Simultaneous Motion in Normal and Tangential Direction: Experiments and Simulations
title_sort indentation and detachment in adhesive contacts between soft elastomer and rigid indenter at simultaneous motion in normal and tangential direction: experiments and simulations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10603904/
https://www.ncbi.nlm.nih.gov/pubmed/37887608
http://dx.doi.org/10.3390/biomimetics8060477
work_keys_str_mv AT lyashenkoiakova indentationanddetachmentinadhesivecontactsbetweensoftelastomerandrigidindenteratsimultaneousmotioninnormalandtangentialdirectionexperimentsandsimulations
AT popovvalentinl indentationanddetachmentinadhesivecontactsbetweensoftelastomerandrigidindenteratsimultaneousmotioninnormalandtangentialdirectionexperimentsandsimulations
AT borysiukvadym indentationanddetachmentinadhesivecontactsbetweensoftelastomerandrigidindenteratsimultaneousmotioninnormalandtangentialdirectionexperimentsandsimulations