On Mode I crack mechanism in the puncturing of soft tissues

Andrea Spagnoli; Roberto Brighenti; Riccardo Alberini; Matteo Montanari; Michele Terzano

doi:10.1016/j.prostr.2022.05.074

On Mode I crack mechanism in the puncturing of soft tissues

Andrea Spagnoli^*, Roberto Brighenti, Riccardo Alberini, Matteo Montanari, Michele Terzano

^*Corresponding author for this work

Institute of Biomechanics (7190)

Research output: Contribution to journal › Conference article › peer-review

Abstract

In the present paper, the mechanics of puncturing is studied with refer to a foreign tool penetrating a soft (nearly incompressible) target solid. The penetrating tool is here described by a sharp tipped rigid needle with a circular cross section. Puncturing can be characterised as a Mode I fracture process, which is here analytically described by a two-dimensional model related to the plane normal to the penetration axis. It is shown that the force required for the onset of needle penetration is dependent on two energy contributions, that is, the strain energy stored in the target solid and the energy consumed in Mode I crack propagation.

Original language	English
Pages (from-to)	656-663
Number of pages	8
Journal	Procedia Structural Integrity
Volume	41
Issue number	C
DOIs	https://doi.org/10.1016/j.prostr.2022.05.074
Publication status	Published - 2022
Event	2nd Mediterranean Conference on Fracture and Structural Integrity: MedFract2, 2022 - Catania, Italy Duration: 14 Feb 2022 → 16 Feb 2022

Keywords

cutting
fracture mechanics
puncturing
sharpness
soft material

ASJC Scopus subject areas

Civil and Structural Engineering
General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/j.prostr.2022.05.074Licence: CC BY-NC-ND 4.0

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title = "On Mode I crack mechanism in the puncturing of soft tissues",

abstract = "In the present paper, the mechanics of puncturing is studied with refer to a foreign tool penetrating a soft (nearly incompressible) target solid. The penetrating tool is here described by a sharp tipped rigid needle with a circular cross section. Puncturing can be characterised as a Mode I fracture process, which is here analytically described by a two-dimensional model related to the plane normal to the penetration axis. It is shown that the force required for the onset of needle penetration is dependent on two energy contributions, that is, the strain energy stored in the target solid and the energy consumed in Mode I crack propagation.",

keywords = "cutting, fracture mechanics, puncturing, sharpness, soft material",

author = "Andrea Spagnoli and Roberto Brighenti and Riccardo Alberini and Matteo Montanari and Michele Terzano",

note = "Funding Information: The authors would like to thank the support from European Union{\textquoteright}s Horizon 2020 Research and Innovation Pro- Publisher Copyright: {\textcopyright} 2022 The Authors. Published by Elsevier B.V.; 2nd Mediterranean Conference on Fracture and Structural Integrity: MedFract2, 2022 ; Conference date: 14-02-2022 Through 16-02-2022",

year = "2022",

doi = "10.1016/j.prostr.2022.05.074",

language = "English",

volume = "41",

pages = "656--663",

journal = "Procedia Structural Integrity",

issn = "2452-3216",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - On Mode I crack mechanism in the puncturing of soft tissues

AU - Spagnoli, Andrea

AU - Brighenti, Roberto

AU - Alberini, Riccardo

AU - Montanari, Matteo

AU - Terzano, Michele

N1 - Funding Information: The authors would like to thank the support from European Union’s Horizon 2020 Research and Innovation Pro- Publisher Copyright: © 2022 The Authors. Published by Elsevier B.V.

PY - 2022

Y1 - 2022

N2 - In the present paper, the mechanics of puncturing is studied with refer to a foreign tool penetrating a soft (nearly incompressible) target solid. The penetrating tool is here described by a sharp tipped rigid needle with a circular cross section. Puncturing can be characterised as a Mode I fracture process, which is here analytically described by a two-dimensional model related to the plane normal to the penetration axis. It is shown that the force required for the onset of needle penetration is dependent on two energy contributions, that is, the strain energy stored in the target solid and the energy consumed in Mode I crack propagation.

AB - In the present paper, the mechanics of puncturing is studied with refer to a foreign tool penetrating a soft (nearly incompressible) target solid. The penetrating tool is here described by a sharp tipped rigid needle with a circular cross section. Puncturing can be characterised as a Mode I fracture process, which is here analytically described by a two-dimensional model related to the plane normal to the penetration axis. It is shown that the force required for the onset of needle penetration is dependent on two energy contributions, that is, the strain energy stored in the target solid and the energy consumed in Mode I crack propagation.

KW - cutting

KW - fracture mechanics

KW - puncturing

KW - sharpness

KW - soft material

UR - http://www.scopus.com/inward/record.url?scp=85134607906&partnerID=8YFLogxK

U2 - 10.1016/j.prostr.2022.05.074

DO - 10.1016/j.prostr.2022.05.074

M3 - Conference article

AN - SCOPUS:85134607906

SN - 2452-3216

VL - 41

SP - 656

EP - 663

JO - Procedia Structural Integrity

JF - Procedia Structural Integrity

IS - C

T2 - 2nd Mediterranean Conference on Fracture and Structural Integrity: MedFract2, 2022

Y2 - 14 February 2022 through 16 February 2022

ER -

On Mode I crack mechanism in the puncturing of soft tissues

Abstract

Keywords

ASJC Scopus subject areas

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