CS-FEM在膝关节有限元模型中的应用

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中图分类号：G842 文献标志码：A文章编号：1000-4939（2025）06-1439-08

Abstract：Objective To improve the quality and efciency of the mesh in the finite element model of the knee joint byusing the cell-based smoothed finite element method（CS-FEM）.Methods The gradient smoothing technique is introducedon the basis of the traditional finite element method，and CS-FEM is used to mesh the finite element model of the knee joint，and to compare which of the two methods （traditional finite element method and CS-FEM） is more accurate for the experimental data of the previous study.Results CS-FEM is more accurate and reduces the complexity of meshing than the traditional finite element method，and reduces the number of cells，making the solution process more efficient.

Conclusion The conventional FEM methods ofer high computational accuracy and stability when dealing with relatively simple geometries and linear materials due to their wide application and maturity. However，in biomechanical simulation of complex structures and nonlinear materials，CS-FEM provides higher computational efficiency and accuracy by optimizing meshing and reducing stress concentration. Therefore，CS-FEM is expected to be more widely used in the modelling of knee joints and other complex bio

logical structures in the future.

Key words：knee joint； finite element modelling;CS-FEM meshing technique

在人体膝关节生物力学分析中，由于膝关节解剖结构复杂，且构成膝关节的骨、软骨、韧带、肌肉和肌腱实体表面往往是不规则的自由曲面，故如何建立合理有效的膝关节有限元模型一直是一项非常重要和复杂的工作[1]。（剩余14438字）