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| Numerical research on longitudinal flexibility of a coronary stent |
| Received:November 27, 2009 Revised:September 25, 2010 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201103001 |
| KeyWord:coronary stent flexibility contact aeolotropism |
| Author | Institution |
| 李宁 |
大连理工大学 运载工程与力学学部工程力学系 工业装备结构分析国家重点实验室,大连 |
| 张洪武 |
大连理工大学 运载工程与力学学部工程力学系 工业装备结构分析国家重点实验室,大连 |
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| Abstract: |
| Longitudinal flexibility is one of important mechanical properties of a coronary stent. This paper simulated the bending deformation of a stent until a large bending curvature was achieved. The results demonstrated that the elastic phase of bending was very short. During the simulations, the contact algorithm was appealed to produce more accurate and truthful results. Since MACTM stent possess an asymmetrical structure, it provides a probability of the aeolotropic bending behavior. The bending stiffness was studied with different loading orientation, and the final results verified the aeolotropism. The bending stiffness increased sharply and varied greatly after the occurrence of the structural self-contact. Besides the bending deformation, sideways deflection and torsion about the axis were both found by this numerical research. |