Virtual kidney modeling based on particle spring model and skeleton ball model
In response to key issues such as geometric dissection,physical modeling,and numerical solution method selection in soft tissue modeling,this paper adopts the Delaunay method in geometric dissection of soft tissue,and proposes a method that combines the particle spring model and the skeleton ball model,solving the problem of poor deformation simulation performance of a single particle spring model.By comparing various numerical analysis methods,the improved explicit Euler method was selected to complete the numerical solution of the Kinematics equation of the virtual kidney physical model.The method to determine and limit the movement deformation area of the virtual soft tissue model is proposed,which improves the image refresh rate and force feedback refresh rate of the virtual surgery system.
soft tissue modelingparticle spring modelskeleton ball modelimproved Euler methoddeformation region
NETL
NSTL
万方数据
