We are pleased to announce the persons who are going to talk as a Keynote Lecturer at the 5th Conference on Advances and Applications of GiD.
- Carlos Pérez & Giulio Piacentino, McNeel Europe
Rhinoceros, NURBS Modelling - Grasshopper, Generative Design
- Jonathan Shewchuk Personal page
University of California at Berkeley: "Aggressive Tetrahedral Mesh Improvement"
We present a tetrahedral mesh improvement program called Stellar that locally optimizes finite element meshes so their worst tetrahedra have a level of quality substantially better than those produced by any previous method for tetrahedral mesh generation or "mesh clean-up." Mesh optimization methods often get stuck in bad local optima (poor-quality meshes) because their repertoire of mesh transformations is weak. We employ a broader palette of operations than any previous mesh improvement software. Alongside the best traditional topological and smoothing operations, we introduce a topological transformation that inserts a new vertex (sometimes deleting others at the same time). We describe a schedule for applying and composing these operations that rarely gets stuck in a bad optimum. We demonstrate that all three techniques--smoothing, vertex insertion, and traditional transformations--are substantially more effective than any two alone. Our implementation usually improves meshes so that all dihedral angles are between 34 and 131 degrees.