A shell finite element model of the pelvic floor muscles
A shell finite element model of the pelvic floor muscles
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DOI：
10.1080/10255840500405378
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发表时间：
2005-10-01
影响因子：
1.6
通讯作者：
Jorge, R. M. Natal
中科院分区：
文献类型：
--
作者：
D'Aulignac, D.;Martins, J. A. C.;Jorge, R. M. Natal
盆底为腹腔内的器官提供支撑。使用公开的数据集（Janda el al. J. Biomech. (2003) 36(6), pp. 749-757），我们使用 NURB 曲面重建了盆底最重要部分之一的提肛肌的几何形状。一旦表面被三角化，相应的网格就会用于带有壳单元的有限元分析。基于肌肉的 3D 行为，我们构建了一个壳，该壳考虑了肌肉纤维的方向和组织的不可压缩性。存储在纤维中的各向同性应变能和被动应变能的本构模型改编自汉弗莱心肌模型。为此添加了骨骼肌的主动行为。我们提出了在压力和主动收缩下提肛肌模拟的初步结果。这项研究旨在帮助模拟产后发生的盆底损伤。
The pelvic floor gives support to the organs in the abdominal cavity. Using the dataset made public ill (Janda el al. J. Biomech. (2003) 36(6), pp. 749-757), we have reconstructed the geometry of one of the most Important parts of the pelvic floor, the levator ani, Using NURB surfaces. Once the surface is triangulated, the corresponding mesh is Used in a finite element analysis with shell elements.Based oil the 3D behavior of the muscle we have constructed a shell that takes into account the direction of the muscle fibers and the incompressibility of the tissue. The constitutive model for the isotropic strain energy and tile passive strain energy stored ill the fibers is adapted from Humphrey's model for cardiac muscles. To this the active behavior of tile skeletal muscle is added.We present preliminary results of a simulation of the levator ani muscle under pressure and with active contraction. This research aims at helping simulate the damages to the pelvic floor that Call occur after childbirth.