A combined experimental and numerical study of stab-penetration forces

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Title: A combined experimental and numerical study of stab-penetration forces
Authors: Ní Annaidh, Aisling
Cassidy, Marie
Curtis, Michael
et al.
Permanent link: http://hdl.handle.net/10197/5939
Date: Dec-2013
Abstract: The magnitude of force used in a stabbing incident can be difficult to quantify, although the estimate given by forensic pathologists is often seen as 'critical' evidence in medico-legal situations. The main objective of this study is to develop a quantitative measure of the force associated with a knife stabbing biological tissue, using a combined experimental and numerical technique. A series of stab-penetration tests were performed to quantify the force required for a blade to penetrate skin at various speeds and using different 'sharp' instruments. A computational model of blade penetration was developed using ABAQUS/EXPLICIT, a non-linear finite element analysis (FEA) commercial package. This model, which incorporated element deletion along with a suitable failure criterion, is capable of systematically quantifying the effect of the many variables affecting a stab event. This quantitative data could, in time, lead to the development of a predictive model that could help indicate the level of force used in a particular stabbing incident.
Type of material: Journal Article
Publisher: Elsevier
Journal: Forensic Science International
Volume: 233
Issue: 1-3
Start page: 7
End page: 13
Copyright (published version): 2013 Elsevier
Keywords: Penetration forceStabbingFinite elementForensic biomechanicsSkin
DOI: 10.1016/j.forsciint.2013.08.011
Language: en
Status of Item: Peer reviewed
metadata.dc.date.available: 2014-09-29T11:35:28Z
Appears in Collections:Mechanical & Materials Engineering Research Collection

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