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1. 发明授权

US06813592B1 Method for crack propagation simulation 失效
标题翻译：裂纹扩展模拟方法
公开(公告)号：US06813592B1
公开(公告)日：2004-11-02
申请号：US09597471
申请日：2000-06-20
申请人： Guido Dhondt
发明人： Guido Dhondt
IPC分类号： G06F1750
CPC分类号： G01N3/02 , G01N2203/0066 , G01N2203/0214 , G01N2203/0216
摘要： A method for crack propagation simulation in which a definition of a three-dimensional structure and of an initial crack are provided, a cut of the structure along a crack propagation is calculated, a new crack front is determined by determining stress values by a finite element calculation and by using a crack propagation function. The propagated crack is then triangulated, and the aforementioned steps are repeated until a predetermined end condition is fulfilled.
摘要翻译：提供了一种裂纹扩展模拟方法，其中提供三维结构和初始裂纹的定义，计算沿裂纹扩展的结构切割，通过有限元素确定应力值来确定新的裂纹前沿计算和使用裂纹扩展函数。然后将传播的裂纹进行三角测量，并重复上述步骤，直到满足预定的结束条件。

2. 发明授权

US06804635B1 Generating a three-dimensional mesh for finite element analysis 失效
标题翻译：生成有限元分析的三维网格
公开(公告)号：US06804635B1
公开(公告)日：2004-10-12
申请号：US09640365
申请日：2000-08-16
申请人： Guido Dhondt
发明人： Guido Dhondt
IPC分类号： G06F1750
CPC分类号： G06T17/20
摘要： A method for generating a three-dimensional mesh for a structure to be subjected to three-dimensional structural finite element analysis entails the steps of providing a triangulation of the surface of said structure, providing a master mesh encompassing said structure, processing, by performing at least one of the steps of cutting and remeshing, at least those elements of the master mesh that are intersected by said triangulation such that the elements internal to said structure correspond to elements of said three-dimensional mesh each having a first predetermined topological property, and discarding elements of the master mesh external to said structure. The three-dimensional meshes are generated in a fully or at least partially automated fashion. The generated three-dimensional meshes have good properties for the subsequent finite element calculations.
摘要翻译：用于生成用于要进行三维结构有限元分析的结构的三维网格的方法包括以下步骤：提供所述结构表面的三角测量，提供包含所述结构的主网格，通过在至少一个切割和重新镶嵌的步骤，至少是由所述三角剖面相交的主网格的元素，使得所述结构内部的元素对应于每个具有第一预定拓扑特性的所述三维网格的元素，以及丢弃所述结构外部的主网格的元素。三维网格以完全或至少部分自动化的方式产生。生成的三维网格对于随后的有限元计算具有良好的性质。

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