Open AccessFlexible Mass Spring Method for Modelling Soft Tissue Deformation
Author(s) -
Mohd Nadzeri Omar,
Yongmin Zhong
Publication year - 2021
Publication title -
international journal of engineering technology and sciences
Language(s) - English
Resource type - Journals
eISSN - 2462-1269
pISSN - 2289-697X
DOI - 10.15282/ijets.7.2.2020.1003
Subject(s) - deformation (meteorology) , isotropy , conical surface , stiffness , spring (device) , nonlinear system , soft tissue , viscoelasticity , flexibility (engineering) , materials science , mechanics , anisotropy , structural engineering , physics , engineering , optics , mathematics , composite material , medicine , pathology , quantum mechanics , statistics
It is well accepted that soft tissue deformation is a combination of linear and nonlinear response. During small displacements, soft tissues deform linearly while during large displacements, soft tissues show nonlinear deformation. This paper presents a new approach for modelling of soft tissue deformation, from the standpoint of Mass Spring Method (MSM). The proposed MSM model is developed using conical spring methodology which allow the MSM model to have different stiffnesses at different displacements during deformation. The stiffness variation creates flexibility in the model to simulate any linear and nonlinear deformations. Experimental results demonstrate that the deformations by the proposed method are in good agreement with those real and phantom soft tissue deformations. Isotropic and anisotropic deformations can be accommodated by the proposed methodology via conical spring geometry and configuration of the springs. The proposed model also able to simulate typical viscoelastic behaviour of soft tissue.