dc.contributor.author |
Jor, Jessica |
en |
dc.contributor.author |
Nash, Martyn |
en |
dc.contributor.author |
Nielsen, Poul |
en |
dc.contributor.author |
Hunter, Peter |
en |
dc.contributor.editor |
Holzapfel, GA |
en |
dc.contributor.editor |
Taber, L |
en |
dc.date.accessioned |
2011-08-16T03:55:35Z |
en |
dc.date.accessioned |
2012-03-15T22:25:06Z |
en |
dc.date.issued |
2011 |
en |
dc.identifier.citation |
Biomech Model Mechanobiol 25 Nov 2010 |
en |
dc.identifier.issn |
1617-7959 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/14480 |
en |
dc.description.abstract |
This paper presents a structurally based modeling framework to characterize the structure–function relation in skin tissues, based upon biaxial tensile experiments performed in vitro on porcine skin. Equi-axial deformations were imposed by stretching circular skin specimens uniformly along twelve directions, and the resultant loads at the membrane attachment points were measured. Displacement fields at each deformation step were tracked using an image 2D cross-correlation technique. A modeling framework was developed to simulate the experiments, whereby measured forces were applied to finite element models that were created to represent the geometry and structure of the tissue samples. Parameters of a structurally based constitutive relation were then identified using nonlinear optimization. Results showed that the ground matrix stiffness ranged from 5 to 32 kPa, fiber orientation mean from 2 to 13◦ from the torso midline, fiber undulation mean from 1.04 to 1.34 and collagen fiber stiffness from 48 to 366 MPa. It was concluded that the objective function was highly sensitive to the mean orientation and that a priori information about fiber orientation mean was important for the reliable identification of constitutive parameters. |
en |
dc.relation.ispartofseries |
Biomechanics and Modeling in Mechanobiology |
en |
dc.relation.replaces |
http://hdl.handle.net/2292/7446 |
en |
dc.relation.replaces |
2292/7446 |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/1617-7959/ |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.subject |
skin |
en |
dc.subject |
biomechanics |
en |
dc.subject |
collagen |
en |
dc.subject |
material parameter identification |
en |
dc.subject |
porcine |
en |
dc.title |
Estimating material parameters of a structurally based constitutive relation for skin mechanics |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1007/s10237-010-0272-0 |
en |
pubs.issue |
5 |
en |
pubs.begin-page |
767 |
en |
pubs.volume |
10 |
en |
dc.rights.holder |
Copyright: Springer |
en |
dc.identifier.pmid |
21107636 |
en |
pubs.end-page |
778 |
en |
pubs.publication-status |
Published |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Article |
en |
pubs.elements-id |
250853 |
en |
pubs.org-id |
Bioengineering Institute |
en |
pubs.org-id |
ABI Associates |
en |
pubs.org-id |
Engineering |
en |
pubs.org-id |
Engineering Science |
en |
pubs.org-id |
Science |
en |
pubs.org-id |
Science Research |
en |
pubs.org-id |
Maurice Wilkins Centre (2010-2014) |
en |
dc.identifier.eissn |
1617-7940 |
en |
pubs.record-created-at-source-date |
2011-12-04 |
en |
pubs.dimensions-id |
21107636 |
en |