第五章对三维有限元网格的生成方法进行了介绍，并指出三维有限元网格剖分的发展趋势和方向。
The fifth chapter introduces some three-dimensional FEM mesh generation methods, and points out the trend of them.
利用超单元技术对复杂水工结构的三维有限元网格自动剖分进行了研究，对有限元计算所涉及的各种问题实现了自动生成。
Super - element scheme is used to study automatic mesh generation in FEM of complex hydraulic structures. In the study, automatic generation of various problems related to FEM computation is realized.
对物理模型进行了三维有限元网格划分，配备材料特性参数，选用三维块状单元进行有限元计算分析，得到在外力作用下的应力分布和其它相关结果。
After the model is divided into elements by 3D brick unit and input the material parameters, the solution will be done under the restrain conditions and loads.
方法：根据人体下颌骨的螺旋CT扫描图像，利用三维重建、图像处理和网格划分技术，建立人体下颌骨的三维有限元模型。
Methods: a Finite Element Model of human mandible is developed from ct scan images by the technologies of three-dimensional reconstruction, image processing and meshing.
成功地获得了一些具有应用代表性的三维板壳和块体结构有限元计算网格的自动划分原理和算法。
The automatic mesh generating principle and its algorithm are obtained successfully for some representive three dimensional finite element problems.
在生成三维随机球形骨料模型的基础上，研究了形成随机凸多面体骨料模型的方法，并利用FORTRAN语言编制凸多面体骨料生成程序和细观有限元网格剖分程序。
FORTRAN program to generate random convex polyhedron aggregate based on the topology of spherical aggregates and the codes of the mesoscale structured finite element grids of concrete is developed.
根据人体下颌骨的螺旋CT扫描图像，利用三维重建、图像处理和网格划分技术，建立了人体下颌骨的三维有限元模型。
A finite element model of human mandible is developed from ct scan images by the technologies of three-dimensional reconstruction, image processing and meshing.
介绍一种将线段转换成三维六面体有限元网格的实用方法。
A practical method of generating hexahedron mesh for finite element method through transfering lines into volumes was introduced.
该法较好地解决了由计算对象边界复杂、材料分区多变带来的有限元三维网格自动剖分的困难。
The method overcomes the difficulty induced by complicated boundary and changeable materials of calculated objectives in auto-generation of the 3D FEM meshes.
对有限元软件MARC进行了二次开发，实现混凝土有限元网格的各种材质单元的材料参数的自动识别及赋值，三维数值模拟结果的较直观显示等。
The second development of FEM software-MARC was studied to identify and assign the different material property of elements automatically and display the three-dimensional simulation result.
本文针对带有间断系数的三维椭圆问题，讨论任意四面体剖分下的二次拉格朗日有限元方程的代数多重网格法。
In this paper, we consider a quadratic Lagrangian finite element equation arising from discretizations of 3d elliptic problem with jump coefficients under any tetrahedral partition.
内螺纹管滚珠旋压三维有限元模拟中，铜管的网格划分和滚珠加载方式是模拟的关键问题。
The mesh of copper tubes and loading ways of the balls are the key problems during three dimensional FE simulation of ball spinning of inner grooved tubes.
内螺纹管滚珠旋压三维有限元模拟中，铜管的网格划分和滚珠加载方式是模拟的关键问题。
The mesh of copper tubes and loading ways of the balls are the key problems during three dimensional FE simulation of ball spinning of inner grooved tubes.
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