As the speed of new generation high-speed electric multiple units (EMU) increases, requirements for vibration and noise reduction in traction gear trains are becoming higher higher. Although most researchers have focused on mechanics analysis gears, actual has direct impact passenger experience safety. To address this problem, a type curved cylindrical is proposed to analyze dynamic characteris...

The unsteady flow characteristics and responses of an NACA 0012 airfoil fitted with a bio-inspired morphing trailing edge flap (TEF) at near-stall angles attack (AoA) undergoing downward deflections are investigated Reynolds number 0.62 × 106 near stall. An geometric parametrization dynamic meshing scheme used to drive the motion. objective is determine susceptibility actuation viability rapid ...

The model has to be evaluated in terms of accuracy, robustness and speed. In a first evaluation, sequences of anatomic structures were used. Accuracy and robustness were evaluated by registering reconstructed point clouds with a polygon model from a laser scanner. The first results indicated that the surface model is reconstructed with millimeter precision. An important criterion for the usabil...

The objective of the present research is to develop a standard hexahedral Finite Element (FE) model of the human femur accounting for the material characteristics of cortical bone, cancellous bone and bone marrow. The anatomical data were acquired from the Visible Human Project. A detailed outline of the steps necessary in developing hexahedral FE meshes from computed tomography (CT) data is pr...

Metric tensor fields computed from solution data for adaptation problems are not always well-behaved. They may contain noise, high gradients in desired directionality and anisotropy, global undulations in directionality, and other defects that pose challenges for meshing algorithms. We focus on the application of filters to address some of these defects through noise removal and a form of fairi...

Meshing is the process of computing, for a given surface, a representation consisting of pieces of simple surface patches, like triangles. This survey discusses all currently known surface (and curve) meshing algorithms that come with correctness and quality guarantees. Page references to other chapters are to the pages of the book. The original publication is available on-line at www.springerl...

3D laser scanners become more and more popular especially for measuring construction sites, in the field of architecture and for preservation of monuments. As these scanners can only record discrete data sets (point clouds), it is necessary to mesh these sets for getting closed 3D models and take advantage of 3D graphics acceleration of modern graphics hardware. The meshing process is a complex...

Issues related to curvilinear mesh generation starting from a CAD model are addressed. Curvilinear mesh geometry representation in the context of p-version finite elements and its impact on the validity of curvilinear meshes is discussed. A set of meshing tools is described for generation and modification of curved meshes in three-dimensional space. An iterative algorithm for curved meshing of ...