Green strain based FE modeling of rheological objects for handling large deformation and rotation

2011 ◽  
Author(s):  
Zhongkui Wang ◽  
Shinichi Hirai
Keyword(s):  
Large Deformation ◽  
Fe Modeling ◽  
Green Strain

scholarly journals Integration of Geometrical Boundary Conditions on Soft Tissue Characterization under large deformation

2008 ◽  
Author(s):  
Bummo Ahn ◽  
Jung Kim
Keyword(s):  
Soft Tissue ◽  
Boundary Conditions ◽  
Large Deformation ◽  
Tissue Characterization ◽  
Surface Deformation ◽  
Viscoelastic Model ◽  
Fe Modeling ◽  
Porcine Liver ◽  
Radius Of Influence ◽  
Geometrical Boundary

Soft tissue characterization with finite element (FE) modeling is important to develop a realistic model for medical simulation, since it is possible to display complex tool-tissue interactions during medical interventions. However, it is difficult to integrate large deformation and geometrical boundary conditions to the FE computations. In this paper, the force responses and surface deformation fields of the tissues against the indentation were measured by a force transducer and three-dimensional optical system. Large indentation experiments on porcine liver were performed to estimate the radius of influence from the indented point up to 8 mm indentation and to measure the force response for 7mm indentation. The radius of influence region was plotted against various indentation depths and indenter shapes, and it could be used to determine the model size for the characterization. The tissue behavior of large deformation considering influence of the boundary conditions was characterized with FE modeling via hyperelastic and linear viscoelastic model.

PROPOSAL OF HYSTERESIS MODEL USING DIFFERENTIAL EQUATIONS CONSIDERING OF CYCLIC DEGRADATION UNDER LARGE DEFORMATION

2020 ◽  
Vol 85 (773) ◽  
pp. 921-931
Author(s):  
Tsuyoshi FUKASAWA ◽  
Shigeki OKAMURA ◽  
Takahiro SOMAKI ◽  
Takayuki MIYAGAWA ◽  
Tomohiko YAMAMOTO ◽  
...  
Keyword(s):  
Differential Equations ◽  
Large Deformation ◽  
Hysteresis Model ◽  
Cyclic Degradation

TWO-DIMENSIONAL LARGE DEFORMATION FINITE ELEMENT MODELLING OF SENSITIVE CLAY LANDSLIDES

2020 ◽  
Author(s):  
Bipul Hawlader ◽  
◽  
Chen Wang ◽  
Ripon Karmaker ◽  
Didier Perret ◽  
...  
Keyword(s):  
Finite Element ◽  
Large Deformation ◽  
Finite Element Modelling ◽  
Two Dimensional ◽  
Element Modelling ◽  
Sensitive Clay

A fast response, large deformation, excellent mechanical pH-responsive polyacrylonitrile/polyimide bilayer film

Polymer ◽  
2020 ◽  
Vol 191 ◽  
pp. 122271
Author(s):  
Xu Wang ◽  
Chengyong He ◽  
Longbo Luo ◽  
Daiqiang Chen ◽  
Xiangyang Liu ◽  
...  
Keyword(s):  
Large Deformation ◽  
Fast Response ◽  
Bilayer Film ◽  
Ph Responsive
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