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
|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 force; Stabbing; Finite element; Forensic biomechanics; Skin||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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