Size Functions and Mesh Generation for High-Quality Adaptive Remeshing
نویسنده
چکیده
We present a new method for remeshing of triangular and tetrahedral meshes. Relative element sizes are computed from an error estimation. Then their gradient is limited in an optimal way by solving a Hamilton-Jacobi equation numerically. The new mesh is generated using smoothing-based iterations with connectivity updates (changes in topology of the mesh). The boundary nodes are projected using an implicit geometry representation based on distance functions. Our algorithm is simple and efficient, and it produces high-quality meshes.
منابع مشابه
Adaptive Remeshing for Real-Time Mesh Deformation
We present an adaptive isotropic remeshing technique that is fast enough to be used in interactive applications, such as mesh deformation or mesh sculpting. Previous real-time remeshing techniques are either not adaptive, hence requiring too many triangles, or make compromises in terms of triangle quality. High quality adaptive remeshing techniques are too slow for interactive applications. In ...
متن کاملA mesh generation procedure to simulate bimaterials
It is difficult to develop an algorithm which is able to generate the appropriate mesh around the interfaces in bimaterials. In this study, a corresponding algorithm is proposed for this class of unified structures made from different materials with arbitrary shapes. The non-uniform mesh is generated adaptively based on advancing front technique available in Abaqus software. Implementing severa...
متن کاملEQSM: An efficient high quality surface grid generation method based on remeshing
The EQSM method for the generation of unstructured triangular surface grids is presented. The method is based on remeshing techniques and avoids the need for traditional mesh triangulation approaches, such as the advancing front and the Delaunay methods. Normalized edge lengths, based on a metric derived from curvature or from a user-specified spacing, are employed as the remeshing criterion. I...
متن کاملAdaptive Dynamic Projection-Based Partitioning for Parallel Delaunay Mesh Generation Algorithms
Meshes of high quality are an important ingredient for many applications in scientific computing. An accurate discretization of the problem geometry with elements of good aspect ratio is required by many numerical methods. In the finite element method, for example, interpolation error is related to the largest element angle in the mesh [1]. There is a critical need for algorithms that can gener...
متن کاملAdaptive remeshing based on a posteriori error estimation for forging simulation
This paper presents a fully automatic 3D adaptive remeshing procedure and its application to non-steady metal forming simulation. Remeshing, here, is considered as the improvement of an existing mesh rather than a complete rebuilding process. The mesh optimization technique is described. It is based on the combination of local improvement of the neighbourhood of nodes and edges. The surface and...
متن کامل