The estimation of the losses due to friction meshing tooth flanks is an important point in design gear drives. In addition other factors, efficiency a stage criterion for selecting type and number stages order achieve desired ratio. This manuscript deals with various approaches which that result from face-gear can be estimated. addition, influence directions sliding rolling speed investigated, ...

We describe a domain decomposition algorithm for use in several variants of the parallel adaptive meshing paradigm of Bank and Holst. This algorithm has low communication, makes extensive use of existing sequential solvers, and exploits in several important ways data generated as part of the adaptive meshing paradigm. We show that for an idealized version of the algorithm, the rate of convergen...

This paper describes a novel approach based on fuzzy logic technique for smoothing process on the unstructured meshes in 2D. The proposed method works local on triangulation. Therefore, remeshing does not require. It is known that other smoothing operations such as laplacian smoothing , optimization based smoothing, angle based smoothing, and hybrid smoothing operations work global. That is, in...

We describe a new algorithm for building piecewise linear approximations of an implicit surface. This algorithm is the first one guaranteeing that the implicit surface and its approximation are isotopic. Key-words: implicit surfaces, meshing, Morse theory INRIA † INRIA ‡ Rijksuniversiteit Groningen Maillage de surfaces implicites avec topologie certifiée Résumé : Nous décrivons un nouvel algori...

We discuss enhancing the generality of 2-D unstructured mesh programming by isolating some geometric dependencies so that they can be easily changed. The speciic task discussed is quality mesh generation for a 2-D man-ifold by local reenement with Delaunay insertion. The geometric dependencies that we wish to isolate are its embedded global coordinate system , including its dimension (planar or...

The very first requirement to effectively use a computational fluid dynamics model is to prepare a 3D physical geometric model of the problem. Analysis of the fuel spray process involves specification of chamber space like bore and stroke of an internal combustion engine. Fluent software needs geometric meshing which in the present case is carried out using commercially available Gambit softwar...

We present a simple method for meshing a 3D point cloud to a manifold genus-0 mesh. Our approach is based on recent methods for spherical embedding of planar graphs, where we use instead a k-nearest neighborhood graph of the point cloud. Our approach proceeds in two steps: We first embed the neighborhood graph on a sphere using an iterative procedure, minimizing the tangential Laplacian. Then w...

A method is presented for controlling element sizes on the interior of areas during surface meshing. A Delaunay background mesh is defined over which a neighborhood based interpolation scheme is used to interpolate element sizes. A brief description of natural neighbor interpolation is included and compared to linear interpolation. Two specific applications are presented that utilize the sizing...