Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 175 for “"Meshing"”.
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Virtual topology based hex-dominant meshing and re-meshing
… virtual regions for which a simple hex-meshing strategy can be applied. A new translator tool is introduced to query virtual models using virtual geometry curves. Additional reasoners are then used to automatically process the different meshing strategies and generate a conformal mesh, …
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Well-Centered Meshing
A well-centered simplex is a simplex whose circumcenter lies in its interior, and a well-centered mesh is a simplicial mesh in which every simplex is well-centered. We examine properties of the well-centered simplex and well-centered meshes, present experimental results from an optimization method …
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Well-centered meshing
A well-centered simplex is a simplex whose circumcenter lies in its interior, and a well-centered mesh is a simplicial mesh in which every simplex is well-centered. We examine properties of the well-centered simplex and well-centered meshes, present experimental results from an optimization method …
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Spacetime Meshing for Discontinuous Galerkin Methods
… the flexibility of these methods, we give a meshing algorithm to construct an unstructured simplicial spacetime mesh over an arbitrary simplicial space domain. Our algorithm is the first adaptive spacetime meshing algorithm suitable for efficient solution of nonlinear phenomena using …
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Non-linear Contact Analysis of Meshing Gears
… This study focuses on stiffness cycle and meshing stiffness of non-linear quasi-static finite element modeling. The comparisons of meshing stiffness will concentrate on the type of elements, the integration methods, the meshing quality, plane stress and plane strain analysis, sensitivity of …
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Parallel Delaunay Refinement and Space -Time Meshing
A tetrahedron is acute if all its dihedral angles are less than 90°. Triangulations of three-dimensional domains with acute tetrahedra are useful in mesh generation. We give several constructions for tiling space with acute tetrahedra.
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Contributions to automatic meshing in the AMORE scheme
… amounts of man-hours are used during the meshing phase of FE analyses to partition and prescribe element types, where the ability to mesh portions of the geometry with hex elements is preferred over using tet elements in the mesh. The recent advances in the theory of Overlapping Finite …
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A new method of meshing in discontinuous deformation analysis (DDA)
… in conventional Finite Element programs. The sub-meshing method therefore allows mixed-formulation analyses, with DDA blocks and FEM meshes interacting within a single system, while remaining efficient, and reasonably simple to incorporate into existing DDA program codes. It would also be possible …
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Adaptive unstructured spacetime meshing for four-dimensional spacetime discontinuous Galerkin finite element methods
… the extension of the existing 2d×time spacetime meshing algorithm known as TentPitcher to 3d×time problems. We review existing work based on TentPitcher. Then, we extend TentPitcher to 3d×time and derive methods for handling mesh adaptivity operations. Next, we describe the software we have …
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On the Potential Impact of Curved Meshing for Higher-order Adaptive Mesh Simulations
… of incorporating curvature into an adaptive meshing process. Results are presented for both uniform and adaptive refinement, considering first a volume output problem, followed by a boundary output problem; analytic solutions to these canonical problems are derived and presented as well. The …
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Simulations of interfacial dynamics of complex fluids using diffuse interface method with adaptive meshing
… from one phase to the other. Adaptive meshing is applied to produce fine grid near the interface and coarse mesh in the bulk. It leads to accurate resolution of the interface at modest computational costs. An advantage of this method is that topological changes such as interfacial …
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Spacetime meshing of stratified spaces for spacetime discontinuous Galerkin methods in arbitrary spatial dimensions
… and motivate the need for supporting spacetime meshing on meshes comprised of multiple manifolds. We first discuss preliminary concepts behind simplices, simplicial complexes, and the generalization to oriented simplicies. Using these ideas, we define stratified spaces and how they can be used …
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Exploring the technics of computer representation : three 'prepared' instruments for plotting, meshing and rendering
… and objects. The three sections: Plotting, Meshing and Rendering, materialize the underlying infrastructure of the computer representation technology we interact with daily as designers, exploiting a form of "time-lapse" image to freeze moments that happen within an instant inside the …
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All Hexahedral Meshing of Multiple Source, Multiple Target, Multiple Axis Geometries Via Automatic Grafting and Sweeping
… a second volume. In this manner it is useful for meshing multi-axis geometry in that a single axis can be meshed with sweeping and then secondary axes can be grafted on. By creating an algorithm for automatically performing these processes, the base set of geometry that can be automatically meshed …
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Hybrid meshing techniques for full-orbit particle-in-cells simulation of full scrape-off layers including plasma-surface interaction and Monte Carlo collision effects
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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New overlapping finite elements and their application in the AMORE paradigm
… novel finite element procedures to reduce the meshing effort expended on constructing a finite element model for solids and structures. The new meshing paradigm of "a̲utomatic m̲eshing with overlapping and regular elements", the AMORE paradigm, has recently been formulated. In this paradigm, …
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A Unified Overlapping Finite Element Formulation
… distorted and thus perform poorly. The AMORE meshing scheme and the overlapping finite elements have been recently proposed to easily obtain an effective mesh for a geometrically complex domain. The AMORE scheme, which stands for automatic meshing with overlapping and regular elements, fills …
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The Development of a Computational Model of Thrombosis in Hemodialysis Catheters
… by computational power and unsophisticated meshing techniques. To build upon this work, and take advantage of BYU's new supercomputing system and improvements in automatic meshing software, development of a three-dimensional computational model of thrombosis in three hemodialysis catheters …
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