- Path:
-
Cover
Periodical
- Title:
- Current directions in biomedical engineering
- Publication:
-
Berlin: De Gruyter
- Note:
- Open Access
- Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International
- Scope:
- Online-Ressource
- ISSN:
- 2364-5504
- ZDB-ID:
-
2835398-5
- VÖBB-Katalog:
- 35423553
- Keywords:
- Zeitschrift
- Classification:
- Naturwissenschaften
- DDC Group:
- 570 Biowissenschaften, Biologie
- Collection:
- Naturwissenschaften
- Copyright:
- Rights reserved
- Accessibility:
- Free Access
Article
- Title:
- Planar stent segment expansion as multiaxial validation load case for stent development
- Publication:
-
Berlin: De Gruyter, 2025
- Language:
- English
- Information:
- Abstract: The development of stent technologies faces new challenges with advent of polymeric materials, offering versatility in mechanical, physicochemical, and biological properties. Biodegradable polymers, such as poly-L-lactide (PLLA), are particularly promising. Numerical simulations, particularly finite element analysis (FEA), play a crucial role in optimizing stent designs. However, validating advanced material models for FEA is essential due to the lack of consensus on data collection and validation methods. This study introduces a validation framework using planar stent segment expansion to assess the mechanical behavior of polymeric materials and designs efficiently without extensive stent production. PLLA specimens were manufactured via injection molding and tested at 37 °C. Two material models, a linear elastic-plastic (LEP) model and an advanced viscoplastic (AVP) model, were compared. In summary, AVP showed improved conformity with experimental data. Our results demonstrate the importance of advanced material models for accurate FEA simulations and bridges the gap between numerical simulations and experimental validation in polymeric stent applications.
- Scope:
- Online-Ressource
- Note:
- Open Access
- Archivierung/Langzeitarchivierung gewährleistet
- Keywords:
- polymer stent ; FEA ; validation ; PLLA
- Classification:
- Naturwissenschaften
- Medizin
- Collection:
- Naturwissenschaften
- Medizin
- Copyright:
- CC BY
- Accessibility:
- Free Access
