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Meshing-related Papers (14 entries)
 
Advancing Front Surface Mesh Generation in Parametric Space Using a Riemannian Surface Definition
  Joseph Tristano, Steven Owen, and Scott Canann
  [Click here for PDF file]
This is the new Riemann triangular mesher added in ANSYS 5.5
"A method is presented for meshing 3D CAD surfaces in parametric space using an advancing front approach and a metric map to govern the size and shape of the triangles in the parametric space."
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Average Rating: 8.5 (24 votes)  
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An Approach to Combined Laplacian and Optimization-Based Smoothing for Triangular, Quadrilateral, and Quad-Dominant Meshes [PDF]
  Scott A. Canann, Joseph R. Tristano, Matthew L. Staten
  "In this paper, an overall mesh smoothing scheme is presented for meshes consisting of triangular, quadrilateral, or mixed triangular and quadrilateral elements. This paper describes an efficient and robust combination of constrained Laplacian smoothing together with an optimization-based smoothing algorithm."
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Average Rating: 10.0 (15 votes)  
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An Object Oriented Approach to Geometry Defeaturing for Finite Element Meshing [PDF]
  Anton V. Mobley, Michael P. Carroll, and Scott A. Canann
  "In this paper, an object-oriented approach to automatic geometry defeaturing is presented. The geometric and finite element data abstractions are given, along with the basic algorithms used."
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Average Rating: 10.0 (6 votes)  
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BMSweep: Locating Interior Nodes During Sweeping [PDF]
  Matthew L. Staten, Scott A. Canann, and Steve J. Owen
  "BMSweep is a new algorithm to determine the location of interior nodes while volume sweeping."
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Average Rating: 10.0 (3 votes)  
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Fully Automatic Adaptive Mesh Refinement Integrated into the Solution Process
  Joseph R. Tristano, Zhijan Chen, D. Alfred Hancq, Wa Kwok
  "Finite element analysts and designers need to feel confident in the results of their analyses before sending a product to prototype or production. Mesh discretization can greatly influence the desired results. In this paper we present framework for adaptive mesh refinement to obtain FEA results with a desired accuracy. The process involves adaptively refining the mesh based on solution error norms until the result desired converges to certain accuracy. The adaptive refinement/meshing process must be fully automatic and very robust. We present an exhaustive method to create a fully automatic and integrated process that takes advantage of many of the mesh refinement and mesh optimization algorithms found in literature. The results of the process provide the user with the desired accuracy in the smallest number of iterations possible."
[Workbench Simulation, version 7.1]
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Average Rating: 7.5 (2 votes)  
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Mesh Discretization Error and Criteria for Accuracy of Finite Element Solutions
  Chandresh Shah
  "Any finite element analysis performed by an engineer is subject to several types of errors that can compromise the validity of the results. These errors can be broadly classified under the following categories: 1) user error - incorrect usage of FE software or input by the FE analyst, 2) errors due to assumptions and simplifications used in the model and 3) errors due to insufficient mesh discretization. User errors can be prevented by developing and utilizing a comprehensive pre and post processing checklist and by appropriate training in the basics of finite element analysis and usage of FE software. Errors due to modeling assumptions and simplifications can be alleviated by adding complexity to the model so that it better represents the physics of the problem being analyzed. Errors due to the inadequacy or coarseness of the mesh are often overlooked by the analyst. These errors due to mesh discretization can be fixed by evaluating the quality of the mesh and by developing and utilizing criteria that characterize the accuracy of the FE solution. This paper describes the source of mesh discretization error and presents several criteria that can be used by an FE analyst to evaluate the accuracy of the FE solution."
[ANSYS 5.7, 2002 Conference]
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Average Rating: 10.0 (4 votes)  
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Meshing papers presented at the 1998 Conference
  Various ANSYS staff and CMU students
  10 Papers on meshing algorithms
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Average Rating: 8.7 (16 votes)  
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Neighborhood-based Element Sizing Control for Finite Element Surface Meshing [PDF]
  Steven Owen, and Sunil Saigal
  "A method is presented for controlling element sizes on the interior of areas during surface meshing. A Delaunay background mesh is defined over which a neighborhood based interpolation scheme is used to interpolate element sizes."
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Average Rating: 10.0 (1 vote)  
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Post Refinement Element Shape Improvement for Quadrilaterial Meshes [PDF]
  Matthew L. Staten and Scott A. Canann
  "This paper presents techniques for improving the quality of quadrilateral meshes after Schneiders' refinement. Improvement techniques use topology and node valence optimization rather than shape metrics. Hence, improvement is computationally inexpensive."
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Average Rating: 9.0 (5 votes)  
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Pyramid Elements for Maintaining Tetrahedra to Hexahedra Conformability
  Steven Owen, Scott Canann, and Sunil Saigal
  [Click here for PDF file]
This is a feature added in ANSYS 5.5 to automatically define transitional pyramids between hex- and tet-meshed volumes (e.g., with SOLID95)

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Average Rating: 10.0 (2 votes)  
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Quad-Morphing: Advancing Front Quad Meshing Using Triangle Tranformations
  Steven Owen, Matthew Staten, Scott Canann, and Sunil Saigal
  [Click here for PDF file]
This is the new Q-morph quad mesher added in ANSYS 5.5
"Quad-morphing is a new technique used for generating quadrilaterals from an existing triangle mesh. Beginning with an initial triangulation, triangles are systematically transformed and combined. An advancing front method is used to determine the order of transformations. An all-quadrilateral mesh containing elements aligned with the area boundaries with few irregular internal nodes can be generated."
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Average Rating: 5.0 (1 vote)  
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Smartsizing: Automatic Boundary Sizing for 2D and 3D meshes [PDF]
  Alexandre L. Cunha, Sunil Saigal, Scott A. Canann
  "We present in this paper a simple technique, called smart sizing, which automatically computes high quality initial element sizing on curves for triangular, quadrilateral and tetrahedral elements."
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Average Rating: 10.0 (5 votes)  
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Steve Owen's Meshing Research Corner
  Steve Owen
  This is the best source to go for everything you wanted to know about meshing...but were afraid to ask.
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Average Rating: 10.0 (4 votes)  
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Understanding Accuracy and Discretization Error in an FEA Model
  Jon Pointer
  "The often-ignored topic of mesh discretization error is examined to identify a simple set of rules that the average user can enlist to determine solution accuracy. The sources of discretization error are explained, tools to quantify it are introduced and an example is given. The purpose is to bring an understanding of these issues and usable tools to the common user who is not proficient in the mathematical basis of FEA."
[ANSYS 7.1, 2004 Conference]
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Average Rating: 10.0 (4 votes)  
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