کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
500782 | 863111 | 2005 | 26 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Automatic hexahedral mesh generation using a new grid-based method with geometry and mesh transformation Automatic hexahedral mesh generation using a new grid-based method with geometry and mesh transformation](/preview/png/500782.png)
A geometry and mesh transformation approach is proposed to overcome the traditional problem of poorly shaped elements at the boundary using the grid-based method of mesh generation. This is achieved by transforming the original geometric model to a topologically similar recognition model which conforms fully to the Cartesian directions. Such a recognition model is constructed by tessellating the original model and then employing a fuzzy logic method to determine the normal directions of the faces. A three-dimensional field morphing algorithm is used to position the features of the recognition model. Such a recognition model is then meshed with hexahedral elements without any degeneracy using the new grid-based algorithm. The mesh of the recognition model is mapped back to the original geometric model by employing a transformation based on the Laplacian-isoparametric equation.
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 194, Issues 39–41, 1 October 2005, Pages 4071–4096