A methodology for constraining power in finite element modeling of radiofrequency ablation

2016 ◽  
Vol 33 (7) ◽  
pp. e2834 ◽  
Author(s):  
Yansheng Jiang ◽  
Ricardo Possebon ◽  
Stefaan Mulier ◽  
Chong Wang ◽  
Feng Chen ◽  
...  
Keyword(s):  
Finite Element ◽  
Radiofrequency Ablation ◽  
Finite Element Modeling ◽  
Element Modeling

Finite element modeling of cooled-tip probe radiofrequency ablation processes in liver tissue

2008 ◽  
Vol 38 (6) ◽  
pp. 694-708 ◽  
Author(s):  
Rimantas Barauskas ◽  
Antanas Gulbinas ◽  
Tomas Vanagas ◽  
Giedrius Barauskas
Keyword(s):  
Finite Element ◽  
Radiofrequency Ablation ◽  
Finite Element Modeling ◽  
Liver Tissue ◽  
Element Modeling

scholarly journals A Deployable Multi-Tine Endoscopic Radiofrequency Ablation Electrode: Simulation Validation in a Thermochromic Tissue Phantom

2019 ◽  
Author(s):  
Bradley Hanks ◽  
Fariha Azhar ◽  
Mary Frecker ◽  
Ryan Clement ◽  
Jenna Greaser ◽  
...  
Keyword(s):  
Finite Element ◽  
Radiofrequency Ablation ◽  
Finite Element Modeling ◽  
Thermal Ablation ◽  
Ablation Zone ◽  
Element Modeling ◽  
Tissue Phantom ◽  
Electrode Shape ◽  
Endoscopic Radiofrequency Ablation ◽  
Ablation Model

Endoscopic radiofrequency ablation has gained interest for treating abdominal tumors. The radiofrequency ablation electrode geometry largely determines the size and shape of the ablation zone. Mismatch between the ablation zone and tumor shapes leads to reoccurrence of the cancer. Recently, work has been published regarding a novel deployable multi-tine electrode for endoscopic radiofrequency ablation. The prior work developed a thermal ablation model to predict the ablation zone surrounding an electrode and a systematic optimization of the electrode shape to treat a specific tumor shape. The purpose of this work is to validate the thermal ablation model through experiments in a tissue phantom that changes color at ablation temperatures. The experiments highlight the importance of thermal tissue damage in finite element modeling. Thermal induced changes in tissue properties, if not accounted for in finite element modeling, can lead to significant overprediction of the expected ablation zone surrounding an electrode.

Exact First Order Finite Element Modeling for Eddy Current NDE

1991 ◽  
Vol 3 (1) ◽  
pp. 235-253 ◽  
Author(s):  
L. D. Philipp ◽  
Q. H. Nguyen ◽  
D. D. Derkacht ◽  
D. J. Lynch ◽  
A. Mahmood
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Eddy Current ◽  
Element Modeling ◽  
First Order ◽  
Eddy Current Nde

Tire Vibration Modes and Effects on Vehicle Ride Quality

1993 ◽  
Vol 21 (1) ◽  
pp. 23-39 ◽  
Author(s):  
R. W. Scavuzzo ◽  
T. R. Richards ◽  
L. T. Charek
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Operating Conditions ◽  
Modal Testing ◽  
Ride Quality ◽  
Vibration Modes ◽  
Inflation Pressure ◽  
Passenger Cars ◽  
Element Modeling ◽  
Road Surfaces

Abstract Tire vibration modes are known to play a key role in vehicle ride, for applications ranging from passenger cars to earthmover equipment. Inputs to the tire such as discrete impacts (harshness), rough road surfaces, tire nonuniformities, and tread patterns can potentially excite tire vibration modes. Many parameters affect the frequency of tire vibration modes: tire size, tire construction, inflation pressure, and operating conditions such as speed, load, and temperature. This paper discusses the influence of these parameters on tire vibration modes and describes how these tire modes influence vehicle ride quality. Results from both finite element modeling and modal testing are discussed.

Evolving the Banded Radial Tire

1987 ◽  
Vol 15 (1) ◽  
pp. 30-41 ◽  
Author(s):  
E. G. Markow
Keyword(s):  
Finite Element ◽  
Wear Rate ◽  
Finite Element Modeling ◽  
Laboratory Tests ◽  
Rolling Resistance ◽  
Two Dimensional ◽  
Theoretical Discussion ◽  
Radial Tire ◽  
Puncture Resistance ◽  
Element Modeling

Abstract Development of the banded radial tire is discussed. A major contribution of this tire design is a reliable run-flat capability over distances exceeding 160 km (100 mi). Experimental tire designs and materials are considered; a brief theoretical discussion of the mechanics of operation is given based on initial two-dimensional studies and later on more complete finite element modeling. Results of laboratory tests for cornering, rolling resistance, and braking are presented. Low rolling resistance, good cornering and braking properties, and low tread wear rate along with good puncture resistance are among the advantages of the banded radial tire designs.

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