A planar model of an ankle joint with optimized material parameters and hertzian contact pairs
Authors:
- Aleksandra Borucka,
- Adam Ciszkiewicz
Abstract
The ankle is one of the most complicated joints in the human body. Its features a plethora of elements with complex behavior. Their functions could be better understood using a planar model of the joint with low parameter count and low numerical complexity. In this study, an accurate planar model of the ankle with optimized material parameters was presented. In order to obtain the model, we proposed an optimizational approach, which fine-tuned the material parameters of two-dimensional links substituting three-dimensional ligaments of the ankle. Furthermore, the cartilage in the model was replaced with Hertzian contact pairs. The model was solved in statics under moment loads up to 5 Nm. The obtained results showed that the structure exhibited angular displacements in the range of the ankle joint and that their range was higher in dorsiflexion than plantarflexion. The structure also displayed a characteristic ramp up of the angular stiffness. The results obtained from the optimized model were in accordance with the experimental results for the ankle. Therefore, the proposed method for fine-tuning the material parameters of its links could be considered viable.
- Record ID
- CUT224f80aa8204461c8aa79a91f9ac3c5e
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2019
- Vol
- 12
- No
- 16
- Pages
- [1-15]
- Article number
- 2621
- Other elements of collation
- wykr.; Bibliografia (na s.) - 13-15; Bibliografia (liczba pozycji) - 46; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 12, Iss. 16
- Keywords in English
- multibody system, static analysis, stiffness, joint moment, sensitivity analysis
- DOI
- DOI:10.3390/ma12162621 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/12/16/2621 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT224f80aa8204461c8aa79a91f9ac3c5e/
- URN
urn:pkr-prod:CUT224f80aa8204461c8aa79a91f9ac3c5e
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.