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Establishment and validation of a finite element model of human fingertip

Zhou, LH; Wu, WC; Srinivasan, MA; (2004) Establishment and validation of a finite element model of human fingertip. Presented at: International Conference on Modeling, Simulation and Visualization Methods/International Conference on Algorithmic Mathematics and Computer Sciences, Las Vegas, NV.

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Abstract

In this paper, both computer simulations and experiments are described which were used to investigate the biomechanics of the human fingertip. A two-dimensional finite element (FE) model was developed based on geometry extracted from MRI images of human fingertips, taking into consideration the nonlinear tissue properties, the inner layers and the ridge substructure. Experiments were performed which recorded the reaction forces resulting from subjecting the finger pad to indentation of approximate 2 mm by a series of spherical indentors ranging in radius from 7.8 mm to 51.7 mm. It has been found that the FE model with the ridge substructure can predict the reaction force better than the model without the ridge substructure. Moreover, the correlation between Young's modulus E and the depth of indentation (DOI), as well as the stress concentration factor (SCF), were examined. Finally, an example is provided showing the effectiveness of the model.

Type: Conference item (UNSPECIFIED)
Title: Establishment and validation of a finite element model of human fingertip
Event: International Conference on Modeling, Simulation and Visualization Methods/International Conference on Algorithmic Mathematics and Computer Sciences
Location: Las Vegas, NV
Dates: 21 June 2004 - 24 June 2004
ISBN: 1-932415-34-3
Keywords: finite element, fingertip, indentation, ridge substructure, reaction force
UCL classification: UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Computer Science
URI: http://discovery.ucl.ac.uk/id/eprint/1360772
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