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A three‐dimensional large deformation model for soft tissue using meshless method
Author(s) -
Dehghan Mohammad Reza,
Rahimi Abdolreza,
Talebi Heidar Ali,
Zareinejad Mohammad
Publication year - 2016
Publication title -
the international journal of medical robotics and computer assisted surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 53
eISSN - 1478-596X
pISSN - 1478-5951
DOI - 10.1002/rcs.1682
Subject(s) - finite element method , correctness , computer science , deformation (meteorology) , soft tissue , meshfree methods , regularized meshless method , cube (algebra) , materials science , algorithm , singular boundary method , structural engineering , mathematics , surgery , geometry , composite material , boundary element method , engineering , medicine
Background Recently, a great number of studies have been carried out to model soft tissue deformation in contact with surgical instruments to aid the development of surgical simulators. Precise methods to model the soft tissue such as the Finite Element Method (FEM) lack accuracy in large deformations. Methods An innovative meshless method is used, which has high precision and is applicable to large deformations. The meshless simulation method is implemented for a 2D beam and a 3D cube. Experiments are conducted for two silicone‐gel samples to verify the correctness of the method. Results The meshless results in 2D and 3D show better accuracy for large deformations in comparison with the FEM. This method is used to model human organs such as liver and gallbladder. Conclusion It is concluded that the proposed model exhibits good accuracy as well as speed. Thus, it seems promising to be employed in surgical simulators. Copyright © 2015 John Wiley & Sons, Ltd.