Finite element analysis and experimental evaluation of superelastic Nitinol stent

XY Gong, AR Pelton, TW Duerig… - … Conference on Shape …, 2004 - books.google.com
XY Gong, AR Pelton, TW Duerig, N Rebelo, K Perry
SMST 2003: International Conference on Shape Memory and Superelastic …, 2004books.google.com
The mechanical properties of Nitinol stents are normally evaluated experimentally due to
complexities resulting from large deformations and material nonlinearity. Despite difficulties
associated with Finite Element Analysis (FEA), the success of computational analysis in
combination with experimental study leads to better understanding of stent performance.
This paper compares experimentally evaluated radial resistive forces of a Nitinol stent to
predictions based on nonlinear FEA. The FEA was performed using ABAQUS with two user …
Abstract
The mechanical properties of Nitinol stents are normally evaluated experimentally due to complexities resulting from large deformations and material nonlinearity. Despite difficulties associated with Finite Element Analysis (FEA), the success of computational analysis in combination with experimental study leads to better understanding of stent performance. This paper compares experimentally evaluated radial resistive forces of a Nitinol stent to predictions based on nonlinear FEA. The FEA was performed using ABAQUS with two user material subroutines independently developed specifically for Nitinol. Close agreements between the FEA and the experiments are shown for both user material subroutines.
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