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Definition of circumferential, axial, and radial wall stress (perspective view). Division of the circumferential force Fc by the area S of the cube face it pulls at yields the circumferential wall stress σc = Fc/S. Division of the axial force Fa by the area S of the cube face it pulls at yields the axial wall stress σa = Fa/S. Division of the radial force Fr by the area S of the cube face it pushes on yields the radial wall stress σr = Fr/S. These three orthogonal stresses are used to describe the mechanical state of the vessel wall at the considered location. The average axial wall stress over a wall cross-section is equal to the quotient "force pulling axially at that cross-section, divided by the area A of that cross-section" (A = π (Ro2 - Ri2)).
Doriot, Pierre-André; Dorsaz, Pierre-André; Noble, JacquesJournal: Theoretical Biology and Medical Modelling
Issue 1DOI: 10.1186/1742-4682-4-29Published: 2007-12-01Institution(s):
This image is from the article titled "Could increased axial wall stress be responsible for the development of atheroma in the proximal segment of myocardial bridges?"
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