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Appl. Sci. 2017, 7(8), 853; doi:10.3390/app7080853

FE Model and Operational Modal Analysis of Lower Limbs

1
Mines de St-Étienne, 158 cours Fauriel, 42023 Saint-Étienne CEDEX 2, France
2
GRESPI, Groupe de Recherche En Science Pour l’Ingenieur, Université de Reims Champagne-Ardenne, 51687 Reims CEDEX 2, France
3
Escuela Colombiana de Ingeniería Julio Garavito, Bogotá D.C. 111166, Colombia
4
Aix Marseille Univ, CNRS, ISM, 13284 Marseille, France
*
Author to whom correspondence should be addressed.
Received: 26 May 2017 / Revised: 30 June 2017 / Accepted: 8 August 2017 / Published: 18 August 2017
(This article belongs to the Section Mechanical Engineering)
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Abstract

Human lower limbs are exposed to vibrations on a daily basis, during work, transport or sports. However, most of the FE (Finite Elements) and OMA (Operational Modal Analysis) studies focus either on the whole body or on the hand-arm system. The study presented herein aims at identifying the modal parameters of the lower limbs using a 2D FE model updated using OMA. A numerical model is proposed, and a modal analysis has been performed on 11 subjects. Two repeatable modal frequencies were extracted: 52 . 54 ± 2 . 05 Hz and 118 . 94 ± 2 . 70 Hz , which were used to update the mechanical properties of the numerical model. The knowledge of these modal characteristics makes it possible to design new equipment that would absorb these specific vibrations and possibly reduce the risk of related diseases in the field of sports and transport. View Full-Text
Keywords: OMA; lower limbs; finite element analysis OMA; lower limbs; finite element analysis
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MDPI and ACS Style

Pionteck, A.; Chiementin, X.; Munera, M.; Murer, S.; Chadefaux, D.; Rao, G. FE Model and Operational Modal Analysis of Lower Limbs. Appl. Sci. 2017, 7, 853.

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