نتایج جستجو برای: meshing characteristics
تعداد نتایج: 662482 فیلتر نتایج به سال:
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...
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...
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...
This paper describes an automatic method for identifying thin-sheet regions (regions with large lateral dimensions relative to the thickness) for complex thin walled components, with a view to using this information to guide the hex meshing process. This fully automated method has been implemented in a commercial CAD system (Siemens NX) and is based on the interrogation and manipulation of face...
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