@Article{cmes.2020.09735,
AUTHOR = {Xiaorui Zhang, Xuefeng Yu, Wei Sun, Aiguo Song},
TITLE = {Soft Tissue Deformation Model Based on Marquardt Algorithm and Enrichment Function},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {124},
YEAR = {2020},
NUMBER = {3},
PAGES = {1131--1147},
URL = {http://www.techscience.com/CMES/v124n3/39932},
ISSN = {1526-1506},
ABSTRACT = {In order to solve the problem of high computing cost and low simulation accuracy caused by discontinuity of incision in traditional meshless model,
this paper proposes a soft tissue deformation model based on the Marquardt algorithm and enrichment function. The model is based on the element-free Galerkin
method, in which Kelvin viscoelastic model and adjustment function are integrated. Marquardt algorithm is applied to fit the relation between force and displacement caused by surface deformation, and the enrichment function is applied to
deal with the discontinuity in the meshless method. To verify the validity of the
model, the Sensable Phantom Omni force tactile interactive device is used to
simulate the deformations of stomach and heart. Experimental results show that
the proposed model improves the real-time performance and accuracy of soft tissue deformation simulation, which provides a new perspective for the application
of the meshless method in virtual surgery.},
DOI = {10.32604/cmes.2020.09735}
}