NDLI: Effect of fingerpad mechanics and anatomical structures on tactile detection of compliant object

Content Provider	IEEE Xplore Digital Library
Author	Hu Jiyong Ding Xin Wang Rubin
Copyright Year	2010
Description	Author affiliation: Key Lab of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai, China (Hu Jiyong; Ding Xin) \|\| Institute for Brain Information Processing and Cognitive Neurodynamics, East China University of Science and Technology, Shanghai, China (Wang Rubin)
Abstract	Human fingerpad and planar objects in contact constitute a complex mechanical system, and contact mechanics involving in this system is important for object recognition and tactile virtual rendering. Although the interactions of fingerpad and compliant planar objects are common, there are not general mechanistic models for fingerpad and planar objects in contact to uncover the role of contact deformation dependent on skin mechanics and anatomical structures in tactile recognition. A 2-D FE model combined with Augmented Lagrange algorithm, from the physiological characteristics of fingerpad, is developed to simulate the interactions between fingerpad and compliant plates with finite thickness, and attempts are made to develop an analytical models of total contact force versus indentation, or contact-area radius, and spatial distribution profiles of contact pressure, respectively. It is demonstrated that the exponential law is more approximate than the power law in describing the compressive stress-strain behaviors of soft tissues within fingertip in the case of human fingerpad against planar objects. However, in the case of contact force versus contact-area radius, the power law is more suitable. In addition, the study indicates that the contact pressure decays following an exponential law away from the contact center. By multiplying the exponential term dependent on bone width into Hertz contact pressure model, a modified model can describe well the spatial contact pressure profiles
Starting Page	2097
Ending Page	2101
File Size	276118
Page Count	5
File Format	PDF
ISBN	9781424459582
e-ISBN	9781424459612
DOI	10.1109/ICNC.2010.5582435
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-10
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Solid modeling cognition Force Fingers Humans contact Bones touch compliant Mathematical model Finite element methods fingerpad
Content Type	Text
Resource Type	Article

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