Modeling and experimental investigations of the stress-softening behavior of soft collagenous tissues
2013 (English)In: Computational Plasticity XII: Fundamentals and Applications - Proceedings of the 12th International Conference on Computational Plasticity - Fundamentals and Applications, COMPLAS 2013, Barcelona: International Center for Numerical Methods in Engineering (CIMNE), 2013, 133-144 p.Conference paper (Refereed)
This paper deals with the formulation of a micro-mechanically based damage model for soft collagenous tissues. The model is motivated by (i) a sliding filament model proposed in the literature  and (ii) by experimental observations from electron microscopy (EM) images of human abdominal aorta specimens, see . Specifically, we derive a continuum damage model that takes into account statistically distributed proteoglycan (PG) bridges. The damage model is embedded into the constitutive framework proposed by Balzani et al.  and adjusted to cyclic uniaxial tension tests of a human carotid artery. Furthermore, the resulting damage distribution of the model after a circumferential overstretch of a simplified arterial section is analyzed in a finite element calculation.
Place, publisher, year, edition, pages
Barcelona: International Center for Numerical Methods in Engineering (CIMNE), 2013. 133-144 p.
Artery, Biomechanics, Collagen, Constitutive modeling, Microstructure
IdentifiersURN: urn:nbn:se:kth:diva-140978ISI: 000345240600012ScopusID: 2-s2.0-84891276254ISBN: 978-849415315-0OAI: oai:DiVA.org:kth-140978DiVA: diva2:695763
12th International Conference on Computational Plasticity: Fundamentals and Applications, COMPLAS 2013; Barcelona; Spain; 3 September 2013 through 5 September 2013
QC 201402052014-02-122014-02-052015-12-03Bibliographically approved