下颌第一磨牙三维有限元模型的建立

Construction of A Three-Dimensional Finite Element Analysis Model of the First Mandibular Molar

【目的】建立下颌第一磨牙三维有限元模型。【方法】将离体下颌第一磨牙经CT扫描及图像处理后,联合应用CAD软件VP studio和Unigraphics NX建立三维几何模型,然后导入有限元分析软件MSC软件中生成实体模型。【结果】在计算机上建立了下颌第一磨牙三维有限元模型,总节点为63 715个,4面单元数为41 676个。【结论】所构建的模型结构完整,单元划分精细,能够较精确地模拟实体状态,为进一步的生物力学研究提供了基础。

To construct a three-dimensional finite element analysis model of the first mandibular molar. [Methods]After the CT scanning and image processing to the first mandibular molar in vitro, a 3-D geometric model was established by the combination of the VP studio and Unigraphics NX, the CAD software. The mesh model was then built in MSC, the finite element analysis software. [Results]The three dimensional finite element method models of the mandibular first molar was constructed on the computer , which had 63715 nodes and 41676 tetrahedrons elements. [Conclusion]The finite element model constructed has the advantages of intact structure and precise elements,can simulate the natural condition and facilitate the further biomechanical research.