1998 Fiscal Year Final Research Report Summary
Development of a system for adaptive mesh generation
Project/Area Number |
09650076
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Engineering fundamentals
|
Research Institution | GUNMA UNIVERSITY |
Principal Investigator |
ISHIKAWA Takeo Gunma University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (40159695)
|
Project Period (FY) |
1997 – 1998
|
Keywords | mesh generation / adaptive mesh / finite element method |
Research Abstract |
Several methods of adaptive mesh generation have been proposed for finite element analysis. The procedure of adaptive mesh generation starts with a coarse mesh and develops a correct mesh at the preprocessing level. It is said that the procedure is time consuming and costly. Thus, it is very important to develop a method for mesh generation that either immediately leads to an acceptable solution or would require less iteration to achieve better results. This research has proposed a method to generate three-dimensional finite element meshes taking into account mesh density. The three-dimensional tetrahedral mesh is constructed by using the Delaunay triangulation method which ensures that the boundary surface of the domain is contained in the triangulation, Prediction of mesh density distribution is accomplished by solving a finite difference equation with a coarse grid. Several numerical examples are provided to illustrate the usefulness of the proposed method. Moreover, this research has discussed a method to improve robustness of the three-dimensional advancing front technique. in this method, a set of nodes is given as input data, and a new element is produced by connecting a selected front to an existing node not to a new node by checking if future tetrahedron elements can be produced. A simple example is shown for comparing with the conventional advancing front technique.
|
Research Products
(6 results)