The Biomechanics Modeling And Simulation Of Human Muscle Based On Finite Element Method

Virtual surgery became the main emphasis of digital medical researchers in the past decades, due to its significant applications in the training of surgery implementation, diagnosis of disease and making operation plans etc. One of the key link in virtual operation systems is the modeling of Human soft tissue, and it was reported that the finite element method (FEM) is one of the most effective and feasible method at present. The most critical problem in the modeling using FEM, is how to ensure the deforming of the model simulates that of the real one, which could be realized by making the model have the object material properties of tissues and organs.This research mainly focused on muscle tissue, one of the most ordinary soft tissues. With CT images, related data could be extracted so that the geometric model for muscle tissue could be established. The finite element method and the theories of energy function were applied for determine the matrix representing σ-λ relationship. Adopting the mechanical parameters obtained in biomechanics experiments in the settled σ-λ matrix, enabled the geometric model of muscle exhibit biomechanics characteristics, such as nonlinearity and incompressibility. The finite element analysis of the muscle model was performed in MATLAB software, with the availability of the established model got testified by comparing the results obtained in MATLAB analysis and experiments. What’s more, this research also figured out the model of the heterogeneous distribution of muscular tissue density and the matrix of the architecture quality of muscular tissue, which could be applied in the later work on the kinetics analysis of muscle.What’s fascinating in this paper was that, we extracted data from CT images, and simulated that of the heterogeneous distribution of muscle tissues density, and then the models with individualization and accuracy successfully could be achieved. Not to mention the development of finite element analysis using MATLAB was definitely unprecedented. This provided a feasible scheme in researches concerning biomechanics modeling and imitation of other soft tissues, such as skin and fat.