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Title : Numerical Study of Metal Fatigue in a Superelastic Anchoring Stent Embedded in a Hyperelastic Tube
Company : SIMULIA
File Name : numerical-study-of-metal-fatigue-in-superelastic-2009.pdf
Size : 64472
Type : application/pdf
Date : 09-Jul-2011

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In this study we compare various way of quantifying high cycle radial fatigue behavior in a percutaneous Mitral repair device using Goodman methods. In order to provide an improved representation of the tissue-device interaction, we use an Ogden hyperelastic model to simulate the native vessel with parameters obtained from pressure-diameter test data of human cadaver heart coronary tissue, and published data presented in previous work. We also examine how the computed peak tensile strains at the surface of this device differ from (a)The values computed at integration points in the 3D and (b) The same integration point values extrapolated to the nodal points and averaged over adjacent elements.
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