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On the constitutive modelling of recruitment and damage of collagen fibres in soft biological tissues
Univ Calgary, Grad Programme Mech Engn, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada..
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
Univ Calgary, Dept Mech & Mfg Engn, 2500 Univ Dr NW, Calgary, AB T2N 1N4, Canada..
2018 (English)In: European journal of mechanics. A, Solids, ISSN 0997-7538, E-ISSN 1873-7285, Vol. 72, p. 483-496Article in journal (Refereed) Published
Abstract [en]

The aim of this work is to propose a recruitment and damage constitutive model for collagen fibres in soft biological tissues. Similarly to other published models, our model employs probability distribution functions in order to capture the progressive recruitment and damage of fibrils in a collagen fibre. We rigorously investigate the continuum mechanical treatment of recruitment and damage using a multiplicative decomposition of the deformation gradient. Our proposed model stems from the correction, generalisation and extension to damage of the recruitment model proposed by Martufi and Gasser (2011, J. Biomech., 44, 2544-2550). We demonstrate that the generalised model is equivalent to the recruitment and damage model proposed by Hurschler et al. (1997, J. Biomech. Eng., 119, 392-399). Finally, we explore the sensitivity of the proposed model to the parameters describing recruitment and damage, implement the model into Finite Elements and show an example of application, which gives good agreement with published experimental data.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2018. Vol. 72, p. 483-496
Keywords [en]
Collagen fibre, Recruitment, Damage
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-238113DOI: 10.1016/j.euromechsol.2018.04.007ISI: 000447569000037Scopus ID: 2-s2.0-85049310809OAI: oai:DiVA.org:kth-238113DiVA, id: diva2:1268323
Note

QC 20181205

Available from: 2018-12-05 Created: 2018-12-05 Last updated: 2018-12-05Bibliographically approved

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Gasser, T. Christian

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