Comparison of biphasic material properties of equine articular cartilage estimated from stress relaxation and creep indentation tests
Abstract: Mechanical parameters of hard and soft tissues are explicit markers for quantitative tissue characterization. In this study, we present a comparison of biphasic material properties of equine articular cartilage estimated from stress relaxation (ε = 6 %, t = 1000 s) and creep indentation tests (F = 0.1 N, t = 1000 s). A biphasic 3D-FE-based method is used to determine the biomechanical properties of equine articular cartilage. The FE-model computation was optimized by exploiting the axial symmetry and mesh resolution. Parameter identification was executed with the Levenberg- Marquardt-algorithm. Additionally, sensitivity analyses of the calculated biomechanical parameters were performed. Results show that the Young’s modulus E has the largest influence and the Poisson’s ratio of ν ≤ 0.1 is rather insensitive. The R² of the fit results varies between 0.882 and 0.974 (creep model) and between 0.695 and 0.930 (relaxation model). The averaged parameters E and k determined from the creep model yield higher values in comparison to the relaxation model. The differences can be traced back to the experimental settings and to the biphasic material model.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Comparison of biphasic material properties of equine articular cartilage estimated from stress relaxation and creep indentation tests ; volume:7 ; number:2 ; year:2021 ; pages:363-366 ; extent:4
Current directions in biomedical engineering ; 7, Heft 2 (2021), 363-366 (gesamt 4)
- Urheber
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Reuter, Thomas
Hurschler, Christof
- DOI
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10.1515/cdbme-2021-2092
- URN
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urn:nbn:de:101:1-2022101214091021577411
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:37 MESZ
Datenpartner
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Beteiligte
- Reuter, Thomas
- Hurschler, Christof
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