The effectiveness of a new algorithm on a three-dimensional finite element model construction of bone trabeculae in implant biomechanics.
The effectiveness of a new algorithm on a three-dimensional finite element model construction of bone trabeculae in implant biomechanics.
复制标题
种植体生物力学中骨小梁三维有限元模型构建新算法的有效性。
DOI：
10.1046/j.1365-2842.1999.00442.x
复制
发表时间：
1999
影响因子：
2.9
通讯作者：
N. Shindoi
中科院分区：
文献类型：
--
作者：
Y. Sato;E. Teixeira;K. Tsuga;N. Shindoi
种植体生物力学中有限元分析 (FEA) 的有效性需要缩小元件尺寸。然而，过度缩小需要计算机内存和计算时间。为了评估为在不缩小尺寸的情况下构建更有效的 FEA 模型而建立的新算法的有效性，构建了具有不同单元尺寸（300、150 和 75 微米）的三维 FEA 骨小梁模型。使用四种算法根据各个立方单元中的骨体积逐步（1 至 4 级）分配杨氏模量，然后分析垂直载荷下的应力分布。 300微米单元尺寸的模型，每个单元具有与骨体积相符的4级杨氏模量，呈现出与75微米单元尺寸的模型相似的应力分布。这些结果表明，新算法是有效的，并且建议使用 300 微米元素进行骨小梁表示，不会对应力值产生重大变化，并且可能节省计算机内存和实验室计算时间。
More validity of finite element analysis (FEA) in implant biomechanics requires element downsizing. However, excess downsizing needs computer memory and calculation time. To evaluate the effectiveness of a new algorithm established for more valid FEA model construction without downsizing, three-dimensional FEA bone trabeculae models with different element sizes (300, 150 and 75 micron) were constructed. Four algorithms of stepwise (1 to 4 ranks) assignment of Young's modulus accorded with bone volume in the individual cubic element was used and then stress distribution against vertical loading was analysed. The model with 300 micron element size, with 4 ranks of Young's moduli accorded with bone volume in each element presented similar stress distribution to the model with the 75 micron element size. These results show that the new algorithm was effective, and the use of the 300 micron element for bone trabeculae representation was proposed, without critical changes in stress values and for possible savings on computer memory and calculation time in the laboratory.