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Some materials have linear elasticity. That is, when you plot stress versus strain, you get a straight line whose slope conveys the elastic stiffness, or modulus, of the material. Like most bio logical materials, however, blood vessels exhibit nonlinear elasticity. Their elastic stiffness is not constant but increases with the magnitude of ...
1 Μαΐ 2013 · For diastolic pressures, elasticity increases relatively weakly as pressure increases, while for systolic pressures, elasticity increases significantly as pressure goes up, which means that there is strong non-linearity between arterial wall stiffness and an increase in pressure.
1 Ιαν 2019 · Many important aspects of the mechanical behaviour of arterial tissue can be treated on the basis of elasticity theory, and the focus of the article is therefore on the constitutive modelling of the anisotropic and highly nonlinear elastic properties of the artery wall.
1 Δεκ 1999 · Arteries must have non-linear elastic behaviour. When a material with linear elasticity is deformed, a plot of the applied stress (i.e. force/cross-sectional area) versus the resulting strain (i.e. Δdimension/initial dimension) yields a straight line whose slope is the Young’s modulus of elasticity.
1 Φεβ 2002 · A simplified model of arterial elasticity has been used in many studies in which measurements are confined to the circumferential direction, and elastic non‐linearity is treated by defining incremental elastic properties over a limited region of the stress strain curve that is taken to be linear (for instance, that corresponding to the part ...
1 Αυγ 2018 · Large, elastic arteries are composed of cells and a specialized extracellular matrix that provides reversible elasticity and strength. Elastin is the matrix protein responsible for this reversible elasticity that reduces the workload on the heart and dampens pulsatile flow in distal arteries.
19 Μαΐ 2003 · In practice, therefore, we would suggest that the elastic behavior of the artery wall be described in terms of (1) K, the elastic modulus for volume change per unit length of lumen and/or (2) its inverse, the compressibility.
