scholarly journals A Study on Various Mesh Generation Techniques used for Engineering Applications

2021 ◽  
Vol 3 (2) ◽  
pp. 75-84
Author(s):  
Smitha T. V. ◽  
Madhura S ◽  
Sindhu R ◽  
Brundha R
Keyword(s):  
Finite Element ◽  
Mesh Generation ◽  
3D Visualization ◽  
Surface Mesh ◽  
Engineering Applications ◽  
Automated Generation ◽  
Geometry Model ◽  
Volumetric Images ◽  
Finite Element Meshes ◽  
Aircraft Conceptual Design

In this paper our aim is to provide a survey of mesh generation techniques for some Engineering applications. Mesh generation is a very important requirement to solve any problem by very popular numerical method known as Finite element method (FEM). It has several applications in various fields. One such technique is Automated generation of finite element meshes for aircraft conceptual design. It’s an approach for automated generation of fully connected finite element meshes for all internal structural components, given wing body, geometry model, controlled by a few conceptual level structural layout parameters. Another application where it is used is in the study of biomolecules to generate volumetric mesh of a biomolecule of any size and shape based on its atomic structure. These methods are proved to be a faster method due to the usage of computing techniques. Mesh generator is also used for creating finite element surface and volumetric mesh from 3D binary and gray scale medical images. Some of the applications include volumetric images, surface mesh extraction, surface mesh repairing and many more. It is of great importance in understanding the human brain which is a complex subject. Though 3D visualization is a useful tool available, yet it is inadequate due to its challenging computational problem. This paper also includes the survey on latest tools used for these applications which overcomes many problems associated with the conventional approaches.

Basic LOgical Bulk Shapes (BLOBs) for Finite Element Hexahedral Mesh Generation to Support Virtual Prototyping

1998 ◽  
Vol 120 (4) ◽  
pp. 728-735 ◽  
Author(s):  
S.-S. Liu ◽  
R. Gadh
Keyword(s):  
Finite Element ◽  
Mesh Generation ◽  
Virtual Prototyping ◽  
Solid Model ◽  
Hexahedral Mesh ◽  
Product Model ◽  
Element Analysis ◽  
Element Mesh ◽  
Automated Method ◽  
Finite Element Meshes

Manufacturability analysis of product design reduces the downstream problems of manufacturing. Such design approaches are referred to as Virtual Prototyping when performed on the computer. In the present research, Virtual Prototyping is facilitated by the use of an automated method of determining the finite element meshes needed to perform finite element analyses. Finite element analysis requires a finite element mesh of the product model as input. This mesh (an approximation of an object’s geometry and topology, composed in terms of a given individual unit, e.g., a tetrahedron, or a hexahedron), can be generated using a variety of methods. The research presented here offers an approach for automatic mesh generation that addresses some of the limitations in the mesh-generation technologies currently available. This article presents an approach for automatically generating hexahedral meshes from solid models. The mesh generating method presented in this paper involves four major steps. First, objects called Basic LOgical Bulk shapes (BLOBs) are determined from the solid model of a given part. Second, these BLOBs are used to decompose the solid model into its various sub-volumes. Third, a multiple-block structure (MBS), which is a group of hexahedral objects, is constructed to approximate the solid model. Finally, transfinite mapping is employed to project the faces of the MBS onto the surfaces of a model to generate the finite element meshes.

Finite Element Mesh Generation of Planar Surfaces Using an Interactive Node Point Placement Technique

1985 ◽  
Vol 107 (3) ◽  
pp. 326-333 ◽  
Author(s):  
P. S. Rusnock ◽  
R. J. Cipra
Keyword(s):  
Finite Element ◽  
Mesh Generation ◽  
Display Device ◽  
Element Mesh ◽  
Object Shape ◽  
Quadrilateral Elements ◽  
Planar Surfaces ◽  
Finite Element Meshes ◽  
Point Placement ◽  
Placement Technique

A method is presented for interactively generating finite element meshes for two-dimensional surfaces. The technique is implemented on a graphics display device and will allow the user to create and alter finite element meshes. Given the object shape, the nodes comprising the mesh automatically distribute themselves over the surface as a result of their interaction with neighboring particles and the boundary. They seek equipotential locations, which can be further modified interactively by the user. Based upon these nodal locations, triangular or quadrilateral elements are generated automatically.

scholarly journals Free Tools and Strategies for the Generation of 3D Finite Element Meshes: Modeling of the Cardiac Structures

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
E. Pavarino ◽  
L. A. Neves ◽  
J. M. Machado ◽  
M. F. de Godoy ◽  
Y. Shiyou ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Open Source Software ◽  
Mesh Generation ◽  
Automatic Generation ◽  
The Finite Element Method ◽  
3D Finite Element ◽  
Tetrahedral Meshes ◽  
Finite Element Meshes ◽  
Element Method

The Finite Element Method is a well-known technique, being extensively applied in different areas. Studies using the Finite Element Method (FEM) are targeted to improve cardiac ablation procedures. For such simulations, the finite element meshes should consider the size and histological features of the target structures. However, it is possible to verify that some methods or tools used to generate meshes of human body structures are still limited, due to nondetailed models, nontrivial preprocessing, or mainly limitation in the use condition. In this paper, alternatives are demonstrated to solid modeling and automatic generation of highly refined tetrahedral meshes, with quality compatible with other studies focused on mesh generation. The innovations presented here are strategies to integrate Open Source Software (OSS). The chosen techniques and strategies are presented and discussed, considering cardiac structures as a first application context.

Sign in / Sign up

Export Citation Format

Share Document