An Unfixed-elasticity Mass Spring Model based simulation for soft tissue deformation

Mass Spring Model (MSM) and Finite Element Method(FEM) are the two basic models for soft tissue deformation simulation. MSM has high computation efficiency and low physical accuracy, while the case for FEM is just the reverse. How to simulate the deformation of the tissue in real time and accurately is still a challenging. This paper proposed an improved MSM by determining the parameters of MSM using FEM The improved MSM is called Unfixed-elasticity Mass Spring Model (UMSM), meaning the parameters of each spring is different from those of others, and will change gradually during deformation. The experimental results show a fairly realistic simulation can be generated by UMSM The results indicate that the UMSM has a relatively high reasonability and practicability.