Path of a solid inclusion embedded in a soft matrix subject to finger palpation

[Display omitted] A solid inclusion is embedded in a soft matrix supported by a rigid substrate. To simulate finger palpation, a spherical indenter exerts a vertical load on the matrix surface, followed by a lateral motion. A deep inclusion first rises close to the surface, dives under the indenter,...

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Bibliographic Details
Published inInternational journal of solids and structures Vol. 203; pp. 151 - 156
Main Authors Liu, Shengchen, Wan, Kai-tak
Format Journal Article
LanguageEnglish
Published New York Elsevier Ltd 15.10.2020
Elsevier BV
Subjects
Elastic instability
FEM
Mechanics
Palpation
Substrates
Vertical loads
Mechanics
Palpation
Elastic instability
FEM
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Summary:[Display omitted] A solid inclusion is embedded in a soft matrix supported by a rigid substrate. To simulate finger palpation, a spherical indenter exerts a vertical load on the matrix surface, followed by a lateral motion. A deep inclusion first rises close to the surface, dives under the indenter, and emerges from the leeside of the traversing indenter. The inclusion trajectory is essentially symmetric about the axis where the inclusion lies. A shallow inclusion is first pushed sideways, but an instability causes it to jump spontaneously to the rear following an asymmetric path. Such instability is a specific feature in hyperelastic materials.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0020-7683
1879-2146
DOI:10.1016/j.ijsolstr.2020.07.017