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Usability of finite elements based on the absolute nodal coordinate formulation for deformation analysis of the Achilles tendon
LUT Univ, Finland.
Linköping University, Department of Biomedical and Clinical Sciences, Division of Surgery, Orthopedics and Oncology. Linköping University, Faculty of Medicine and Health Sciences.ORCID iD: 0000-0001-6718-034X
Univ Calif Berkeley, CA 94720 USA.
LUT Univ, Finland.
2021 (English)In: International Journal of Non-Linear Mechanics, ISSN 0020-7462, E-ISSN 1878-5638, Vol. 129, article id 103662Article in journal (Refereed) Published
Abstract [en]

This work explores the modelling of soft tissues, particularly the Achilles tendon, using the absolute nodal coordinate formulation (ANCF).The anisotropic Gasser-Ogden-Holzapfel (GOH) potential energy function provided the necessary anisotropic elastic feature descriptions. A generalized one-dimensional Maxwell model described the viscoelastic effects. Finally, a parameter-based damage model characterized the effects of repetitive loading. We used an objectivity test to establish multibody system dynamics usability. The test ascertains whether or not the developed elements can adequately describe rigid body motion and therefore be applied to describe large deformation in whole bodies. Comparing our results against high-fidelity ANSYS 3D FEA solutions served as verification. To further ensure the validity of the obtained solutions, our results were also compared against test results. For modelling material behaviour, the developed ANCF elements demonstrated substantial fidelity, and simulation results agreed well with test results and results found in the literature.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2021. Vol. 129, article id 103662
Keywords [en]
ANCF element; Anisotropy; Viscoelasticity; GOH-model; Large strains; Objectivity test; Mullins effect
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:liu:diva-174101DOI: 10.1016/j.ijnonlinmec.2020.103662ISI: 000612180100017OAI: oai:DiVA.org:liu-174101DiVA, id: diva2:1537475
Note

Funding Agencies|Research Foundation of Lappeenranta University of Technology; Academy of FinlandAcademy of FinlandEuropean Commission [299033]

Available from: 2021-03-15 Created: 2021-03-15 Last updated: 2021-03-15

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Eliasson, Pernilla T.
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Division of Surgery, Orthopedics and OncologyFaculty of Medicine and Health Sciences
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