An adaptive three-dimensional mesh generation strategy is presented. In contrast to other work which is based on simple meshing techniques, we use advanced unstructured meshing techniques, driven by error estimators, to realize automatic adaptation and guarantee quality. The mesh optimization strategy is based on a classification scheme with a fuzzy indexing for the degree of degeneration of th...

We present an eecient 3D meshing algorithm which combines the merits of two popular meshing methods, advancing front and sphere packing methods. In particular , it inherits the practicality and simplicity of advancing front and the size-and-quality guarantee of the sphere packing method. We prove that it generates a well-shaped mesh whose size is within a constant factor of the optimal possible...

Curvilinear tooth gears are commonly produced on a face milling cutter and a hob cutter. However, this paper proposes a kind of curvilinear tooth gear which is processed by a parallel linkage with a single blade cutter. For the purpose of identifying the meshing and contact characteristics of curvilinear tooth gears, the paper covers the following: (i) equations of tooth surfaces are deduced fr...

Automatic and high quality hexahedral meshing of complex solid models is still a challenging task. To guarantee the quality of the generated mesh, current commercial software normally requires users to manually decompose a complex solid model into a set of simple geometry like swept volume whose high quality hexahedral mesh can be easily generated. The manual decomposition is a time-consuming p...

s and Manuscripts [18] Tight Bounds on the Complexity of Recognizing Odd-Ranked Elements. Shripad Thite. Manuscript, 2006; arXiv:cs.CC/0606038 [19] On Covering a Graph Optimally with Induced Subgraphs. Shripad Thite. Manuscript, 2006; arXiv: cs.DM/0604013 [20] Adaptive Spacetime Meshing in 2D×Time for Nonlinear and Anisotropic Media. Shripad Thite, Jayandran Palaniappan, Jeff Erickson, Robert H...

This paper discusses an elliptical pad structure and its polygonal approximation. The elliptical pad is a part of via model structures, which are important and critical components on today’s multilayered Printed Circuit Board (PCB) and electrical packaging. To explore meshing characterization of the elliptical pad helps mesh generation over 3D structures for electromagnetic modeling (EM) and si...

Many numerical solutions of large scale simulation models require finer discretizations in some regions of the computational grid. When this region is not known in advance, adaptive meshing is the most convenient approach because it focuses the computational efforts on the most significant subdomain(s). However, leaving the tasks of implementing adaptive meshing capabilities to the programmer w...

The use of feature recognition as part of an overall decomposition-based hexahedral meshing approach is described in this paper. Our meshing approach consists of feature recognition, using a c-loop or hybrid c-loop method, and the use of cutting surfaces to decompose the solid model. These steps are part of an iterative process, which proceeds either until no more features can be recognized or ...

For a variety of structural finite element analyses on automotive body panels, aerospace wings and space satellite panels, highquality, structured quadrilateral meshing is imperative. Transfinite meshing, the technique to produce such meshes is severely infringed by the presence of surface-interior point constraints. The present paper attempts to solve the inverse problem of transfinite meshing...