Stiffness map of the grasping contact areas of the human hand
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Otros documentos de la autoría: Pérez-González, Antonio; Vergara, Margarita; Sancho-Bru, Joaquin L.
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Título
Stiffness map of the grasping contact areas of the human handFecha de publicación
2013Editor
Elsevier B.V.ISSN
0021-9290Cita bibliográfica
PÉREZ-GONZÁLEZ, Antonio; VERGARA, Margarita; SANCHO-BRU, Joaquin L. Stiffness map of the grasping contact areas of the human hand. Journal of biomechanics, 2013, 46.15: 2644-2650.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.jbiomech.com/article/S0021-9290%2813%2900385-0/abstractPalabras clave / Materias
Resumen
The elasticity and damping of the soft tissues of the hand contribute to dexterity while grasping and also help to stabilise the objects in manipulation tasks. Although some previous works have studied the force-dis ... [+]
The elasticity and damping of the soft tissues of the hand contribute to dexterity while grasping and also help to stabilise the objects in manipulation tasks. Although some previous works have studied the force-displacement response of the fingertips, the responses in all other regions of the hand that usually participate in grasping have not been analysed to date. In this work we performed experimental measurements in 20 subjects to obtain a stiffness map of the different grasping contact areas of the human hand. A force-displacement apparatus was used to simultaneously measure force and displacement at 39 different points on the hand at six levels of force ranging from 1 N to 6 N. A non-linear force-displacement response was found for all points, with stiffness increasing with the amount of force applied. Mean stiffness for the different points and force levels was within the range from 0.2 N/mm to 7.7 N/mm. However, the stiffness range and variation with level of force were found to be different from point to point. A total of 13 regions with similar stiffness behaviours were identified. The stiffness in the fingertips increased linearly with the amount of force applied, while in the palm it remained more constant for the range of forces considered. It is hypothesised that the differences in the stiffness behaviour from one region to another allow these regions to play different roles during grasping.2 [-]
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Journal of biomechanics, 2013, 46.15Derechos de acceso
© 2013 Elsevier Ltd. All rights reserved.
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info:eu-repo/semantics/openAccess
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