We explore the current capabilities of the recently released Myricom X2OOO witch, using MPICH over the GM communication layer; for message passing on a 2-way SMP Pentium III Beawulf-Class cluster: Performance measurements on the network indicate that data transfer rates of appmximatety 190 Mbyteds for ping-pong tests, and 24OMbyteds forfill-duplex exchange tests, can be achieved for messages as...

In this paper, a double-side milling method on spiral bevel gear is proposed. First, according to the tooth taper processed by method, influence of dedendum angle was researched. Taking cut parameters into comprehensive consideration, geometric were designed through inclination root line and modified mean point in which machine setting calculated selected. Only met meshing equation, error press...

In this research, we integrate a three-dimensional micro-/nano-lattice structure metamaterial with conventional helical gears using composite method to reduce the vibration. A comprehensive six-degree-of-freedom nonlinear dynamics model is constructed analyze vibration characteristics of resulting mechanical gear pair. The incorporates crucial factors such as meshing damping, error excitation, ...

The Shifted Boundary Method (SBM) is an approximate domain method for boundary value problems , in the broader class of unfitted/embedded/immersed methods, that has proven efficient handling partial differential equation with complex geometries . key feature SBM a shift location where conditions are applied – from true to surrogate and appropriate modification (again, ) conditions, order reduce...

Generating accurate volume meshes from segmented image volumes is important in certain medical applications. One application is finite element analysis (FEA) for orthopaedic pre-operative planning. The resulting FEA models can be used in patient-specific, bio-mechanical simulations and implants positioning. Currently available software packages for volume meshing of segmented data can generate ...

This short report describes a preliminary study of a method computing meshes of the standard hyperbolic octagon that respects its symmetries. A prototype software was written, using the 2D meshing package of the CGAL library [1, 10] and a software computing hyperbolic triangulations, currently under development [4]. Key-words: Hyperbolic geometry, Poincaré disk, Schwarz triangle, mesh ∗ This wo...

Decomposing the volume bounded by a closed surface using simple cells is a key step in many applications. Although tetrahedral meshing is well-established with several successful implementations, many research questions remain open for polyhedral meshing, which promises significant advantages in some contexts. Unfortunately, current approaches to polyhedral meshing often resort to clipping cell...

A parametric meshing technique is presented with special emphasis to singularities in the parametric mapping. Singularities are locations where the parametric mapping is highly distorted or even singular. In a NURBS context, this arises when control points are clustered into the same location in three dimensions. Limitations of parametric plane meshing in this context are highlighted, and zeroa...

In this paper, we propose a new algorithm to mesh implicit surfaces which produces meshes both with a good triangle aspect ratio as well as a good approximation quality. The number of vertices of the output mesh is defined by the end-user. For this goal, we perform a two-stage processing : an initialization step followed by an iterative optimization step. The initialization step consists in cap...