Publication date: Available online 22 July 2017
Source:Journal of Biomechanics
Author(s): K.Y. Volokh
There are two polar contemporary approaches to the constitutive modeling of arterial wall with anisotropy induced by collagen fibers. The first one is based on the angular integration (AI) of the strain energy on a unit sphere for the analytically defined fiber dispersion. The second one is based on the introduction of the generalized structure tensors (GST). AI approach is very involved computationally while GST approach requires somewhat complicated procedure for the exclusion of compressed fibers.We present some middle ground models, which are based on the use of 16 and 8 structure tensors. These models are moderately involved computationally and they allow excluding compressed fibers easily. We use the proposed models to study the role of the fiber dispersion in the constitutive modeling of the arterial wall. Particularly, we study the auxetic effect which can appear in anisotropic materials. The effect means thickening of the tissue in the direction perpendicular to its stretching. Such an effect was not observed in experiments while some simple anisotropic models do predict it. We show that more accurate account of the fiber dispersion suppresses the auxetic effect in a qualitative agreement with experimental observations.
from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2trrphJ
via IFTTT
Εγγραφή σε:
Σχόλια ανάρτησης (Atom)
Δημοφιλείς αναρτήσεις
-
Abstract Cardiomyopathy, also known as heart muscle disease, is an unfavorable condition leading to alterations in myocardial contraction ...
-
Background Hyperthyroidism is associated with increased thrombotic risk. As contact system activation through formation of neutrophil extrac...
-
Liver ischemia reperfusion injury (IRI) is inevitable during transplantation and resection and is characterized by hepatocellular injury. Th...
-
Abstract With the aid of the Mach–Zehnder interferometer, the drawability of polypropylene fibres (PP) was optically studied. The effect o...
-
Abstract Understanding the spatial distribution of PM 2.5 concentration and its contributing environmental variables is critical to devel...
-
Accuracy of the Compressed Sensing Accelerated 3D-FLAIR Sequence for the Detection of MS Plaques at 3T. AJNR Am J Neuroradiol. 2...
-
Radioterapia oncologica, la Cattolica protagonista al Congresso Europeo insalutenews ... l'utilizzo della radioterapia stereotass...
-
Abstract Background Individualized medication reviews may improve our understanding of the distribution of CYP2C19 polymorphisms in ethn...
-
Abstract Biodegradable polymer blends of high-molecular-weight poly(3-hydroxybutyrate) (PHB) and poly(lactic acid) (PLA) are not miscible ...
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου