Abstract This paper presents a novel approach to accurately simulate the dynamic characteristics of rack and pinion lifting mechanism while accounting for coupling effect meshing tooth pair stiffness grease in real-world environments. A structure-grease model is established based on deformation coordination conditions meshing. The incorporates term time-varying pinion. By analyzing combined com...

Many numerical solutions of large scale simulation models require finer discretizations in some regions of the computational grid. When this region is not known in advance, adaptive meshing is the most convenient approach because it focuses the computational efforts on the most significant subdomain(s). However, leaving the tasks of implementing adaptive meshing capabilities to the programmer w...

A computational mesh defines the discretization of the problem of interest. The mesh provides the geometric and topological basis on which the equations that describe the problem are solved. Mesh generation is an enabling technology for modern computational analysis, as the feasibility of performing a simulation of a complex assembly, such as a nuclear reactor core, is strongly influenced by th...

Shadows are of great importance to computer graphics, especially for interactive animation due to the visual cues which they provide. Most research in the field of dynamic shadowing has focussed on shadows from point light sources, since they are much easier to compute than those from area light sources. This means that such shadows have sharp boundaries, and so often appear to be unrealistic. ...

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 ...

The meshing impact on transmission system and internal gear pair its the load sharing dynamic characteristics of are not well understood yet. In this paper, models pairs planetary were successfully constructed, point, time force accurately obtained. Meshing in is obviously affected by eccentricity error, installation other errors. Due to difference error each component, external gears branch le...

The DRAMA library, developed within the European Commission funded (ESPRIT) project DRAMA, supports dynamic load-balancing for parallel (message-passing) mesh-based applications. The target applications are those with dynamic and solution-adaptive features. The focus within the DRAMA project was on ®nite element simulation codes for structural mechanics. An introduction to the DRAMA library wil...

the paper investigates into the vibrational characteristics of the truck chassis including the natural frequencies and mode shapes. truck chassis forms the structural backbone of a commercial vehicle. when the truck travels along the road, the truck chassis is excited by dynamic forces caused by the road roughness, engine, transmission and more. modal analysis using finite element method (fem) ...

Curvilinear tooth gears are commonly produced on a face milling cutter and a hob cutter. However, this paper proposes a kind of curvilinear tooth gear which is processed by a parallel linkage with a single blade cutter. For the purpose of identifying the meshing and contact characteristics of curvilinear tooth gears, the paper covers the following: (i) equations of tooth surfaces are deduced fr...