Micromechanical modeling for the probabilistic failure prediction of stents in high-cycle fatigue
dc.contributor.author
hal.structure.identifier | GUERCHAIS, Raphaël
|
dc.contributor.author
hal.structure.identifier | SCALET, Giulia
|
dc.contributor.author
hal.structure.identifier | CONSTANTINESCU, Andrei
|
dc.contributor.author | AURICCHIO, Ferdinando |
dc.date.accessioned | 2016 |
dc.date.available | 2017 |
dc.date.issued | 2016 |
dc.date.submitted | 2016 |
dc.identifier.issn | 0142-1123 |
dc.identifier.uri | http://hdl.handle.net/10985/11316 |
dc.description.abstract | The present paper introduces a methodology for the high-cycle fatigue design of balloon-expandable stents. The proposed approach is based on a micromechanical model coupled with a probabilistic methodology for the failure prediction of stents. This allows to account for material heterogeneity and scatter, to introduce a fatigue criterion able to consider stress gradients, and to perform a probabilistic analysis to obtain general predictions from a limited number of realizations of microstructures investigated. Numerical simulations have allowed to highlight the noteworthy characteristics of the mechanical response in the stent as well as the heterogeneity of the mechanical fields due to stress concentrations in the unit cell geometry and to strain incompatibilities between the grains induced by the anisotropy of their mechanical behavior. The predicted survival probability of the stent is in accordance with the experimental data from the literature. Moreover, the influence of the amplitude of the arterial pressure on the fatigue strength of the stent has been evaluated. |
dc.description.sponsorship | This work is funded by the French National Research Agency (Project Fast3D-ANR-11-BS09-012-01) and by the Fondazione Cariplo(Grant 2013-1779). The authors would like to acknowledge Dr. Michele Conti for his useful advice and for providing the three- dimensional stent mesh used in the present work. |
dc.language.iso | en |
dc.publisher | Elsevier |
dc.rights | Post-print |
dc.subject | Balloon-expandable stent |
dc.subject | Crystal plasticity |
dc.subject | High-cycle fatigue |
dc.subject | Micromechanics |
dc.subject | Probabilistic failure prediction |
dc.title | Micromechanical modeling for the probabilistic failure prediction of stents in high-cycle fatigue |
ensam.embargo.terms | 2018-06-01 |
dc.identifier.doi | 10.1016/j.ijfatigue.2016.02.026 |
dc.typdoc | Article dans une revue avec comité de lecture |
dc.localisation | Centre de Angers |
dc.subject.hal | Sciences de l'ingénieur: Mécanique: Mécanique des matériaux |
ensam.audience | Internationale |
ensam.page | 405-417 |
ensam.journal | International Journal of Fatigue |
ensam.volume | 87 |
ensam.peerReviewing | Oui |
hal.identifier | hal-01392531 |
hal.version | 1 |
hal.submission.permitted | updateMetadata |
hal.status | accept |