The intervals method : a new approach to analyse finite element outputs using multivariate statistics
Marcé Nogué, Jordi (Universität Hamburg. Centrum für Naturkunde)
De Esteban-Trivigno, Soledad (Institut Català de Paleontologia Miquel Crusafont)
Püschel, Thomas (University of Manchester. School of Earth and Environmental Sciences)
Fortuny, Josep (Institut Català de Paleontologia Miquel Crusafont)

Data:	2017
Resum:	Background. In this paper, we propose a new method, named the intervals' method, to analyse data from finite element models in a comparative multivariate framework. As a case study, several armadillo mandibles are analysed, showing that the proposed method is useful to distinguish and characterise biomechanical differences related to diet/ecomorphology. - Methods. The intervals' method consists of generating a set of variables, each one defined by an interval of stress values. Each variable is expressed as a percentage of the area of the mandible occupied by those stress values. Afterwards these newly generated variables can be analysed using multivariate methods. - Results. Applying this novel method to the biological case study of whether armadillo mandibles differ according to dietary groups, we show that the intervals' method is a powerful tool to characterize biomechanical performance and how this relates to different diets. This allows us to positively discriminate between specialist and generalist species. - Discussion. We show that the proposed approach is a useful methodology not affected by the characteristics of the finite element mesh. Additionally, the positive discriminating results obtained when analysing a difficult case study suggest that the proposed method could be a very useful tool for comparative studies in finite element analysis using multivariate statistical approaches.
Ajuts:	Ministerio de Economía y Competitividad CGL2014-54373-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2014-BP-A 00048 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1207
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Biomechanics ; Finite element analysis ; Cingulata ; Armadillos ; Chewing mechanics ; Multivariate analysis
Publicat a:	PeerJ, Vol. 5 (October 2017) , e3793, ISSN 2167-8359

DOI: 10.7717/peerj.3793
PMID: 29043107

21 p, 911.3 KB

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