TY - CHAP
T1 - Nonlinear deformations of soft tissues for surgery simulation
AU - Zhong, Y.
AU - Shirinzadeh, B.
AU - Smith, J.
AU - Gu, C.
AU - Subic, A.
PY - 2016
Y1 - 2016
N2 - Soft tissue deformation is of great importance to virtual reality based surgery simulation. This paper presents a new methodology for modelling of nonlinear soft tissue deformation from the physicochemical viewpoint of soft tissues. This methodology converts soft tissue deformation into nonlinear chemical–mechanical interaction. Based on this, chemical diffusion of mechanical load and non-rigid mechanics of motion are combined to govern the dynamics of soft tissue deformation. The mechanical load applied to a soft tissue to cause a deformation is incorporated in chemical diffusion and distributed among mass points of the soft tissue. A chemical diffusion model is developed to describe the distribution of the mechanical load in the tissue. Methods are established for construction of the diffusion model on a 3D tissue surface and derivation of internal forces from the distribution of the mechanical load. Real-time interactive deformation of virtual human organs with force feedback has been achieved by the proposed methodology for surgery simulation. The proposed methodology not only accommodates isotropic, anisotropic and inhomogeneous materials by simply modifying diffusion coefficients, but it also accepts local and large-range deformation.
AB - Soft tissue deformation is of great importance to virtual reality based surgery simulation. This paper presents a new methodology for modelling of nonlinear soft tissue deformation from the physicochemical viewpoint of soft tissues. This methodology converts soft tissue deformation into nonlinear chemical–mechanical interaction. Based on this, chemical diffusion of mechanical load and non-rigid mechanics of motion are combined to govern the dynamics of soft tissue deformation. The mechanical load applied to a soft tissue to cause a deformation is incorporated in chemical diffusion and distributed among mass points of the soft tissue. A chemical diffusion model is developed to describe the distribution of the mechanical load in the tissue. Methods are established for construction of the diffusion model on a 3D tissue surface and derivation of internal forces from the distribution of the mechanical load. Real-time interactive deformation of virtual human organs with force feedback has been achieved by the proposed methodology for surgery simulation. The proposed methodology not only accommodates isotropic, anisotropic and inhomogeneous materials by simply modifying diffusion coefficients, but it also accepts local and large-range deformation.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85013074421&doi=10.1007%2f978-3-319-27055-5_9&origin=inward&txGid=8d86eaeba6849bd77ca29970d1ab9cc1
UR - https://link.springer.com/chapter/10.1007/978-3-319-27055-5_9
U2 - 10.1007/978-3-319-27055-5_9
DO - 10.1007/978-3-319-27055-5_9
M3 - Chapter
SN - 9783319270531
SP - 281
EP - 296
BT - Nonlinear Approaches in Engineering Applications: Advanced Analysis of Vehicle Related Technologies
PB - Springer
ER -