Numerical Assessment of the Structural Effects of Relative Sliding between Tissues in a Finite Element Model of the Foot
| Autor: | Javier Bayod López, Marco A. Martínez Bocanegra, Agustín Vidal-Lesso, Ricardo Becerro de Bengoa Vallejo, Andrés Mena Tobar |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
foot finite element method General Mathematics 0206 medical engineering shared nodes 02 engineering and technology Shared mesh Stress (mechanics) 03 medical and health sciences 0302 clinical medicine Computer Science (miscellaneous) medicine QA1-939 Aponeurosis Displacement (orthopedic surgery) foot and ankle model Engineering (miscellaneous) business.industry Soft tissue Structural engineering 020601 biomedical engineering Finite element method Tendon medicine.anatomical_structure Podología separated mesh plantar pressure Ankle business 030217 neurology & neurosurgery Mathematics |
| Zdroj: | Mathematics, Vol 9, Iss 1719, p 1719 (2021) Mathematics Volume 9 Issue 15 |
| Popis: | Penetration and shared nodes between muscles, tendons and the plantar aponeurosis mesh elements in finite element models of the foot may cause inappropriate structural behavior of the tissues. Penetration between tissues caused using separate mesh without motion constraints or contacts can change the loading direction because of an inadequate mesh displacement. Shared nodes between mesh elements create bonded areas in the model, causing progressive or complete loss of load transmitted by tissue. This paper compares by the finite element method the structural behavior of the foot model in cases where a shared mesh has been used versus a separated mesh with sliding contacts between some important tissues. A very detailed finite element model of the foot and ankle that simulates the muscles, tendons and plantar aponeurosis with real geometry has been used for the research. The analysis showed that the use of a separate mesh with sliding contacts and a better characterization of the mechanical behavior of the soft tissues increased the mean of the absolute values of stress by 83.3% and displacement by 17.4% compared with a shared mesh. These increases mean an improvement of muscle and tendon behavior in the foot model. Additionally, a better quantitative and qualitative distribution of plantar pressure was also observed. |
| Databáze: | OpenAIRE |
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