Abstract
The therapeutic efficacy of stents strongly depends upon their mechanical properties. An important component of stents is rings, which are usually made of crowns. Such rings can be treated as circular ones, corrugated out of the plane. The deformation of such structure under the action of external pressure is considered in the paper. An asymptotic homogenization method is applied. A formula is obtained for the dependence of the deformation on the external pressure for an arbitrary smooth corrugation profile. The problem is posed to optimise the shape of the corrugation profile in order to maximise radial stiffness. This optimal profile will reduce the cross-sectional area of the fibres of the stent, which will improve its medical performance. The optimal profile found is close to sinusoidal.
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Andrianov, I.V., Awrejcewicz, J. & Diskovsky, A.A. Optimal design of the vascular stent ring in order to maximise radial stiffness. Arch Appl Mech 92, 667–678 (2022). https://doi.org/10.1007/s00419-022-02118-0
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DOI: https://doi.org/10.1007/s00419-022-02118-0