Effect of Thickness on the Mechanical Properties of Magnesium Alloy Stent

Muhammad Iqbal Sabir; Er Bao Liu; Zhen Li; Yu Feng Zheng; Li Li

doi:10.4028/www.scientific.net/AMR.383-390.3192

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 383-390Effect of Thickness on the Mechanical Properties...

Effect of Thickness on the Mechanical Properties of Magnesium Alloy Stent

Abstract:

Magnesium stands for a very attractive material for biodegradable stents because of its natural process and its steady disintegration into the human body by a corrosion process. The objective of the present work is to investigate the effect of the thickness on mechanical properties of the magnesium stent design. A nonlinear transient finite element simulation has been performed to analyze the influence of various thicknesses (from 50µm to 110µm with the increment of 30µm) on the behavior of a magnesium coronary stent. The model was constrained symmetrically to ensure that any virtual rigid movement does not occur during the process of coronary stent expansion. The transient load is applied in three steps in the inner surface of the stent. Four mechanical properties are studied by mathematical modeling with determination of: (1) stent deployment pressure; (2) the intrinsic elastic recoil of the material used; (3) the stent longitudinal recoil; (4) and the stress maps. The results indicate the potential application of magnesium stent and the effect of the thickness on the behavior of magnesium stent design and material.

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Periodical:

Advanced Materials Research (Volumes 383-390)

Pages:

3192-3196

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.383-390.3192

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Online since:

November 2011

Authors:

Muhammad Iqbal Sabir, Er Bao Liu, Zhen Li, Yu Feng Zheng, Li Li

Keywords:

Biodegradable Coronary Stent, Finite Element Analysis (FEA), Mechanical Characteristic, Stent Expansion, Transient Non-Uniform

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