3-dimensional Mesh Generation Using The
Delaunay Method
Author(s)
R. Hoshiko & M. Kawahara
Abstract
The purpose of this research is automatic generating 3-dimensional finite element
mesh using the Delaunay method. In the present age, numerical analysis is used
in various problems. The finite element method is one analytical approach using
the finite element mesh. But, there are problems in that large scale finite element
mesh generation takes a lot of time and cost. As for the large scale finite element
mesh, data are enormous, and it is almost impossible for generation only by manual
labor. In addition, the mesh generators prevail, but those do not always generate
meshes in response to the demand of the user. It is necessary to generate mesh for
the user’s purpose. The Delaunay method is a technique to divide the domain into
tetrahedra by using a set of nodes that are distributed arbitrarily. This technique
can be applied to generate finite element meshes of complicated configuration,
that is to say, practical models. In this research, generating a Suemune tunnel and
mountain-shaped analysis model using the Delaunay method is presented. But, the
Delaunay method cannot dispose the concave faces and interior boundaries.When
generating mesh without device, inadequate elements are generated on concave
faces and interior boundaries. The mesh of the concave faces and interior boundaries
cannot be generated only by the Delaunay method. These problems can be
solved by Virtual nodes. The Virtual nodes represent the nodes that are generated
to remove inadequate elements.
Keywords: Delaunay method, Super tetrahedron, Virtual nodes.
1 Introduction
In recent years, the performance of the electric computer has drastically improved
and the technology of numerical analysis is highly progressed. Therefore it is possible
to carry out large scale numerical simulation. For example, control water
Keywords
Delaunay method, Super tetrahedron, Virtual nodes.
Related Book
Other papers in this volume
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