A Non-Linear Model of an All-Elastomer, in-Plane, Capacitive, Tactile Sensor Under the Application of Normal Forces

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dc.contributor.authorKalayeh, Kourosh M.
dc.contributor.authorCharalambides, Panos G.
dc.date.accessioned2018-11-16T18:52:16Z
dc.date.available2018-11-16T18:52:16Z
dc.date.issued2018-10-24
dc.description.abstractIn this work, a large deformation, non-linear semi-analytical model for an all-elastomer, capacitive tactile unit-sensor is developed. The model is capable of predicting the response of such sensors over their entire sensing range under the application of normal forces. In doing so the finite flat punch indentation model developed earlier is integrated with a capacitance model to predict the change-in-capacitance as a function of applied normal forces. The empirical change-in-capacitance expression, based on the parallel plate capacitance model, is developed to account for the fringe field and saturation effects. The elastomeric layer used as a substrate in these sensors is modeled as an incompressible, non-linear, hyperelastic material. More specifically, the two term Mooney-Rivlin strain energy function is used as a constitutive response to relate the stresses and strains. The developed model assumes both geometrical as well as material non-linearity. Based on the related experimental work presented elsewhere, the inverse analysis, combining finite element (FE) modeling and non-linear optimization, is used to obtain the Mooney-Rivlin material parameters. Finally, to validate the model developed herein the model predictions are compared to the experimental results obtained elsewhere for four different tactile sensors. Great agreements are found to exist between the two which shows the model capabilities in capturing the response of these sensors. The model and methodologies developed in this work, may also help advancing bio-material studies in the determination of biological tissue properties.en_US
dc.description.urihttps://www.mdpi.com/1424-8220/18/11/3614en_US
dc.format.extent19 pagesen_US
dc.genreJournal Articlesen_US
dc.identifierdoi:10.13016/M27S7HW9M
dc.identifier.citationKourosh M. Kalayeh and Panos G. Charalambides , A Non-Linear Model of an All-Elastomer, in-Plane, Capacitive, Tactile Sensor Under the Application of Normal Forces, Sensors 2018, 18(11), 3614; https://doi.org/10.3390/s18113614en_US
dc.identifier.urihttps://doi.org/10.3390/s18113614
dc.identifier.urihttp://hdl.handle.net/11603/12031
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Mechanical Engineering Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Student Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsAttribution 4.0 International (CC BY 4.0)*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subjectanalytical modelingen_US
dc.subjectcapacitive all-elastomer tactile sensorsen_US
dc.subjectfinite flat punch indentationen_US
dc.subjectfinite elementsen_US
dc.subjectinverse analysisen_US
dc.titleA Non-Linear Model of an All-Elastomer, in-Plane, Capacitive, Tactile Sensor Under the Application of Normal Forcesen_US
dc.typeTexten_US

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