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Shear modulus of porcine coronary artery in reference to a new strain measure

Paper ID Volume ID Publish Year Pages File Format Full-Text
10678 697 2007 6 PDF Available
Title
Shear modulus of porcine coronary artery in reference to a new strain measure
Abstract

To simplify the stress–strain relationship of blood vessels, we define a logarithmic–exponential (log–exp) strain measure to absorb the nonlinearity. As a result, the constitutive relation between the second Piola–Kirchhoff stress and the log–exp strain can be written as a generalized Hooke's law. In this work, the shear modulus of porcine coronary arteries is determined from the experimental data in inflation–stretch–torsion tests. It is found that the shear modulus with respect to the log–exp strain can be viewed as a material constant in the full range of elasticity, and the incremental shear modulus for Cauchy shear stress and small shear strain at various loading levels can be predicted by the proposed Hooke's law. This result further validates the linear constitutive relation for blood vessels when shear deformation is involved.

Keywords
Blood vessel; Constitutive relation; Strain measure; Nonlinearity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 28, Issue 31, November 2007, Pages 4733–4738
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us