Evaluation of contact area and contact force between coil and cerebral aneurysm model

2019 ◽  
Vol 2019.32 (0) ◽  
pp. 2G31
Author(s):  
Yuta IKEDA ◽  
Kazuto Takashima ◽  
Kiyoshi YOSHINAKA ◽  
Kaihong YU ◽  
Makoto OHTA ◽  
...  
Keyword(s):  
Cerebral Aneurysm ◽  
Contact Force ◽  
Contact Area ◽  
Aneurysm Model

Simplified experimental cerebral aneurysm model in rats: Comprehensive evaluation of induced aneurysms and arterial changes in the circle of Willis

2009 ◽  
Vol 1300 ◽  
pp. 159-168 ◽  
Author(s):  
Hany Eldawoody ◽  
Hiroaki Shimizu ◽  
Naoto Kimura ◽  
Atsushi Saito ◽  
Toshio Nakayama ◽  
...  
Keyword(s):  
Cerebral Aneurysm ◽  
Comprehensive Evaluation ◽  
Circle Of Willis ◽  
Aneurysm Model

scholarly journals In Vitro Study of Near-Wall Flow in a Cerebral Aneurysm Model with and without Coils

2010 ◽  
Vol 31 (8) ◽  
pp. 1521-1528 ◽  
Author(s):  
L. Goubergrits ◽  
B. Thamsen ◽  
A. Berthe ◽  
J. Poethke ◽  
U. Kertzscher ◽  
...  
Keyword(s):  
Cerebral Aneurysm ◽  
In Vitro Study ◽  
Vitro Study ◽  
Wall Flow ◽  
Aneurysm Model ◽  
Near Wall

scholarly journals A Cerebral Aneurysm Model for Clipping Training

2020 ◽  
Vol 48 (3) ◽  
pp. 161-167
Author(s):  
Hiroshi TENJIN ◽  
Osamu SAITO ◽  
Tsutomu TOKUYAMA ◽  
Toru KAWAKATSU ◽  
Yoshio OKANO
Keyword(s):  
Cerebral Aneurysm ◽  
Aneurysm Model

Determination of the Interference Geometry Between Two Convex Objects

2006 ◽  
Author(s):  
Lianzhen Luo ◽  
Meyer Nahon
Keyword(s):  
Contact Force ◽  
Contact Area ◽  
Contact Dynamics ◽  
Continuous Contact ◽  
Application Point ◽  
Haptic Interactions ◽  
Fitting Method ◽  
Best Fitting ◽  
Arbitrary Objects

The determination of the interference geometry between two arbitrary objects is an essential problem encountered in the simulation of continuous contact dynamics and haptic interactions. In these applications, with known material properties, the interbody contact force is only a function of the interference geometry between two objects. Here a theoretical basis and algorithms for the calculation of the interference geometry, such as overlap region, contact area and normal, and interference volume, are presented. Two methods to obtain the contact area and normal are analyzed: an area-weighted method and a best-fitting method. The geometric properties of the area-weighted method are presented and the degenerate cases related to both methods are discussed. Methods to calculate the application point of an interbody contact force are discussed. Some numerical simulation results are presented based on the implementation of the geometric algorithms, which are verified by comparison with hand calculation. The continuity of contact normal and its application point are demonstrated for a case in which the contacting objects smoothly move with respect to each other in the simulation.

scholarly journals A Finite Element-Based Elastic-Plastic Model for the Contact of Rough Surfaces

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Ali Sepehri ◽  
Kambiz Farhang
Keyword(s):  
Finite Element ◽  
Contact Force ◽  
Contact Area ◽  
Rough Surfaces ◽  
Constitutive Relations ◽  
Element Model ◽  
Tangential Component ◽  
Asperity Contact ◽  
Elastic Plastic ◽  
Force Components

Three-dimensional elastic-plastic contact of two nominally flat rough surfaces is considered. Equations governing the shoulder-shoulder contact of asperities are derived based on the asperity constitutive relations from a finite element model of the elastic-plastic interaction proposed by Kogut and Etsion (2002), in which asperity scale constitutive relations are derived using piecewise approximate functions. An analytical fusion technique is developed to combine the piecewise asperity level constitutive relations. Shoulder-shoulder asperity contact yields a slanted contact force consisting of two components, one in the normal direction and a half-plane tangential component. Statistical summation of the asperity level contact force components and asperity level contact area results in the total contact force and total contact area formulae between two rough surfaces. Approximate equations are developed in closed form for contact force components and contact area.

Angiographic C-arm CT visualization of the Woven EndoBridge Cerebral Aneurysm Embolization Device (WEB): First Experience in an Animal Aneurysm Model

2013 ◽  
Vol 24 (1) ◽  
pp. 43-49 ◽  
Author(s):  
T. Struffert ◽  
S. Lang ◽  
E. Adamek ◽  
T. Engelhorn ◽  
C. M. Strother ◽  
...  
Keyword(s):  
Cerebral Aneurysm ◽  
Aneurysm Embolization ◽  
Woven Endobridge ◽  
Aneurysm Model

316 PIV flow visualization analysis to predict a coil compaction using an anatomically identical cerebral aneurysm model

2007 ◽  
Vol 2006.19 (0) ◽  
pp. 82-83
Author(s):  
Toru MATSUMOTO ◽  
Kiyotaka IWASAKI ◽  
Takanobu YAGI ◽  
Momoko FUKUSHIMA ◽  
Akinori KAMODA ◽  
...  
Keyword(s):  
Flow Visualization ◽  
Cerebral Aneurysm ◽  
Visualization Analysis ◽  
Aneurysm Model

1502 Measurement of unsteady flow in the realistic cerebral aneurysm model and the prediction of rupture of aneurysm(2)

2006 ◽  
Vol 2006 (0) ◽  
pp. _1502-1_-_1502-4_
Author(s):  
Yasuhiko SAKAI ◽  
Reiji NOZUE ◽  
Shinichi ITO ◽  
Haruo ISODA ◽  
Takashi KOSUGI ◽  
...  
Keyword(s):  
Unsteady Flow ◽  
Cerebral Aneurysm ◽  
Aneurysm Model

560 An attempt to clarify the unsteady flow pattern and near wall stress field in the realistic cerebral aneurysm model by the PIV

2007 ◽  
Vol 2007.56 (0) ◽  
pp. 269-270
Author(s):  
Kouji Nagata ◽  
Shinichi Ito ◽  
Yasuhiko Sakai ◽  
Haruo Isoda ◽  
Takashi Kosugi ◽  
...  
Keyword(s):  
Stress Field ◽  
Unsteady Flow ◽  
Flow Pattern ◽  
Cerebral Aneurysm ◽  
Wall Stress ◽  
Aneurysm Model ◽  
Near Wall
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