The non-linear response of a muscle in transverse compression: assessment of geometry influence using a finite element model |
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Authors: | Gras Laure-Lise Mitton David Crevier-Denoix Nathalie Laporte Sébastien |
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Institution: | Arts et Metiers ParisTech, LBM, 151 Boulevard de l'H?pital, 75013, Paris, France. laurelise.gras@gmail.com |
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Abstract: | Most recent finite element models that represent muscles are generic or subject-specific models that use complex, constitutive laws. Identification of the parameters of such complex, constitutive laws could be an important limit for subject-specific approaches. The aim of this study was to assess the possibility of modelling muscle behaviour in compression with a parametric model and a simple, constitutive law. A quasi-static compression test was performed on the muscles of dogs. A parametric finite element model was designed using a linear, elastic, constitutive law. A multi-variate analysis was performed to assess the effects of geometry on muscle response. An inverse method was used to define Young's modulus. The non-linear response of the muscles was obtained using a subject-specific geometry and a linear elastic law. Thus, a simple muscle model can be used to have a bio-faithful, biomechanical response. |
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