DEVELOPMENT AND VALIDATION OF A 3-DIMENSIONAL FINITE-ELEMENT MODEL OF THE PELVIC BONE
DEVELOPMENT AND VALIDATION OF A 3-DIMENSIONAL FINITE-ELEMENT MODEL OF THE PELVIC BONE
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DOI：
10.1115/1.2794181
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发表时间：
1995-08-01
影响因子：
1.7
通讯作者：
VANERNING, L
中科院分区：
文献类型：
--
作者：
DALSTRA, M;HUISKES, R;VANERNING, L
由于其形状和结构结构，骨盆骨的力学是复杂的。在有限元（FE）模型中，这些方面往往被（过度）简化，有时会得出与现实不符的结论。本研究的目的是建立一个移动逼真的骨盆骨有限元模型。这不仅意味着模型必须是三维的，而且还意味着皮质壳的厚度和贯穿骨盆骨的小梁骨的密度分布必须以一种真实的方式纳入模型。为此，对几个骨盆骨进行计算机断层扫描进行定量测量，之后将测量量分别分配给网格的每个元素。为了验证这一有限元模型，我们将两块新鲜的骨盆骨装上应变片并装入试验机中。将本实验应变数据计算的应力与所建立的骨盆有限元模型的模拟结果进行了比较。
Due to both its shape and its structural architecture, the mechanics of the pelvic bone are complex. In Finite Element (FE) models, these aspects have often been (over)simplified, sometimes leading to conclusions which did not bear out in reality. The purpose of this study was to develop a move realistic FE model of the pelvic bone. This not only implies that the model has to be three-dimensional, but also that the thickness of the cortical shell and the density distribution of the trabecular bone throughout the pelvic bone have to be incorporated in the model in a realistic way. For this purpose, quantitative measurements were performed an computer tomography scans of several pelvic bones, after which the measured quantities were allocated to each element of the mesh individually. To validate this FE model, two fresh pelvic bones were fitted with strain gages and loaded in a testing machine. Stresses calculated from the strain data of this experiment were compared to the results of a simulation with the developed pelvic FE model.