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借助计算机辅助设计软件SolidEdge,根据人体解剖学数据建立了人体脊柱L3-L5段近似三维几何模型,并利用有限元分析软件ANSYS进行赋值,模拟了脊柱L3-L5段的结构特性、材料特性、接触特性。将椎骨划分为皮质骨、松质骨等结构,用接触连接的方法模拟了椎骨与椎间盘之间、小关节之间的连接情况,采用实体单元Solid187对其进行网格划分。对该三维有限元模型进行加载分析,得到其在200N轴向力作用下和100N侧向力作用下的应力和变形数据,该数据可以为脊柱生物力学的研究和侧凸脊柱的病因及矫正提供一定的参考依据。
With the aid of computer aided design software SolidEdge, an approximate three-dimensional geometric model of L3-L5 segment of human spine was established based on human anatomy data. The finite element analysis software ANSYS was used to evaluate the structure, material properties, characteristic. The vertebra was divided into cortical bone, cancellous bone and other structures. The connection between the vertebrae and intervertebral disc was simulated by the method of contact and connection. Solid187 was used to mesh the vertebra. The three-dimensional finite element model was loaded and analyzed to obtain its stress and deformation under the action of 200N axial force and 100N lateral force. The data can be used for the study of spinal biomechanics and etiology and correction of scoliosis spine A certain reference.