HapticV1, Main, Merge, bibRecord, 004C05

Modeling the Forces of Cutting with Scissors

Identifieur interne : 004C05 ( Main/Merge ); précédent : 004C04; suivant : 004C06

Modeling the Forces of Cutting with Scissors

Auteurs : Mohsen Mahvash ; Liming Voo ; Diana Kim ; Kristin Jeung ; Joshua Wainer ; Allison M. Okamura

Source :

IEEE transactions on bio-medical engineering [ 0018-9294 ] ; 2008.

RBID : PMC:2709828

English descriptors

KwdEn :
- Computer Simulation, Computer-Aided Design, Elasticity, Equipment Design, Equipment Failure Analysis, Hardness, Humans, Models, Biological, Stress, Mechanical, Surgery, Computer-Assisted (methods), Surgical Instruments, Touch (physiology).
MESH :
- methods : Surgery, Computer-Assisted.
- physiology : Touch.
- Computer Simulation, Computer-Aided Design, Elasticity, Equipment Design, Equipment Failure Analysis, Hardness, Humans, Models, Biological, Stress, Mechanical, Surgical Instruments.

Abstract

Modeling forces applied to scissors during cutting of biological materials is useful for surgical simulation. Previous approaches to haptic display of scissor cutting are based on recording and replaying measured data. This paper presents an analytical model based on the concepts of contact mechanics and fracture mechanics to calculate forces applied to scissors during cutting of a slab of material. The model considers the process of cutting as a sequence of deformation and fracture phases. During deformation phases, forces applied to the scissors are calculated from a torque-angle response model synthesized from measurement data multiplied by a ratio that depends on the position of the cutting crack edge and the curve of the blades. Using the principle of conservation of energy, the forces of fracture are related to the fracture toughness of the material and the geometry of the blades of the scissors. The forces applied to scissors generally include high-frequency fluctuations. We show that the analytical model accurately predicts the average applied force. The cutting model is computationally efficient, so it can be used for real-time computations such as haptic rendering. Experimental results from cutting samples of paper, plastic, cloth, and chicken skin confirm the model, and the model is rendered in a haptic virtual environment.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2709828

DOI: 10.1109/TBME.2007.908069
PubMed: 18334376
PubMed Central: 2709828

Links to Exploration step

PMC:2709828

Le document en format XML

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<author><name sortKey="Voo, Liming" sort="Voo, Liming" uniqKey="Voo L" first="Liming" last="Voo">Liming Voo</name>
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<author><name sortKey="Kim, Diana" sort="Kim, Diana" uniqKey="Kim D" first="Diana" last="Kim">Diana Kim</name>
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<author><name sortKey="Jeung, Kristin" sort="Jeung, Kristin" uniqKey="Jeung K" first="Kristin" last="Jeung">Kristin Jeung</name>
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<author><name sortKey="Wainer, Joshua" sort="Wainer, Joshua" uniqKey="Wainer J" first="Joshua" last="Wainer">Joshua Wainer</name>
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<author><name sortKey="Okamura, Allison M" sort="Okamura, Allison M" uniqKey="Okamura A" first="Allison M." last="Okamura">Allison M. Okamura</name>
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<author><name sortKey="Kim, Diana" sort="Kim, Diana" uniqKey="Kim D" first="Diana" last="Kim">Diana Kim</name>
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<author><name sortKey="Jeung, Kristin" sort="Jeung, Kristin" uniqKey="Jeung K" first="Kristin" last="Jeung">Kristin Jeung</name>
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<author><name sortKey="Wainer, Joshua" sort="Wainer, Joshua" uniqKey="Wainer J" first="Joshua" last="Wainer">Joshua Wainer</name>
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<term>Stress, Mechanical</term>
<term>Surgery, Computer-Assisted (methods)</term>
<term>Surgical Instruments</term>
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<keywords scheme="MESH" xml:lang="en"><term>Computer Simulation</term>
<term>Computer-Aided Design</term>
<term>Elasticity</term>
<term>Equipment Design</term>
<term>Equipment Failure Analysis</term>
<term>Hardness</term>
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<front><div type="abstract" xml:lang="en"><p id="P1">Modeling forces applied to scissors during cutting of biological materials is useful for surgical simulation. Previous approaches to haptic display of scissor cutting are based on recording and replaying measured data. This paper presents an analytical model based on the concepts of contact mechanics and fracture mechanics to calculate forces applied to scissors during cutting of a slab of material. The model considers the process of cutting as a sequence of deformation and fracture phases. During deformation phases, forces applied to the scissors are calculated from a torque-angle response model synthesized from measurement data multiplied by a ratio that depends on the position of the cutting crack edge and the curve of the blades. Using the principle of conservation of energy, the forces of fracture are related to the fracture toughness of the material and the geometry of the blades of the scissors. The forces applied to scissors generally include high-frequency fluctuations. We show that the analytical model accurately predicts the average applied force. The cutting model is computationally efficient, so it can be used for real-time computations such as haptic rendering. Experimental results from cutting samples of paper, plastic, cloth, and chicken skin confirm the model, and the model is rendered in a haptic virtual environment.</p>
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Serveur d'exploration sur les dispositifs haptiques

Modeling the Forces of Cutting with Scissors

Modeling the Forces of Cutting with Scissors

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki

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