Results 101 to 110 of about 6,844,739 (267)

Triangulating Trimmed NURBS Surfaces

open access: yes, 2000
This paper describes techniques for the piecewise linear approximation of trimmed NURBS surfaces. The problem, called surface triangulation, arises from any application in CAD and graphics. The new method generates triangular meshes that are adaptive to the local surface curvature.
Shu, Chang, Boulanger, Pierre
openaire   +1 more source

Three-Dimensional Imaging Technology of Pipelines Based on NURBS Surface

open access: yesShiyou jixie, 2020
Three-dimensional imaging of pipeline is the most intuitive but also the most complicated way to process deformation detection data, and the three-dimensional reconstruction algorithm of surfaces is the key to achieving three-dimensional imaging of ...
Peng He   +4 more
doaj  

AUTOMATIC CONSTRUCTION OF NURBS SURFACES FROM UNORGANIZED POINTS

open access: yesDyna, 2011
El modelamiento con Superfi cies B-Splines Racionales no Uniformes (NURBS) se ha convertido en un estándar en los sistemas CAD/CAM debido a su estabilidad, fl exibilidad y propiedades de modifi cación local. Las ventajas de ajustar con superfi cies NURBS
NALLIG EDUARDO LEAL NARVÁEZ   +2 more
doaj  

The Quick Measure of a Nurbs Surface Curvature for Accurate Triangular Meshing

open access: yesPolish Maritime Research, 2014
NURBS surfaces are the most widely used surfaces for three-dimensional models in CAD/ CAE programs. When a model for FEM calculation is prepared with a CAD program it is inevitable to mesh it finally. There are many algorithms for meshing planar regions.
Kniat Aleksander
doaj   +1 more source

Parallel Computation of RCS of Electrically Large Platform with Coatings Modeled with NURBS Surfaces

open access: yesInternational Journal of Antennas and Propagation, 2012
The significance of Radar Cross Section (RCS) in the military applications makes its prediction an important problem. This paper uses large-scale parallel Physical Optics (PO) to realize the fast computation of RCS to electrically large targets, which ...
Ying Yan   +4 more
doaj   +1 more source

Sviluppo e rappresentazione digitale di superfici architettoniche complesse per la documentazione e il restauro

open access: yesDisegnare con, 2015
This research explains the methodology applied to the representation of the column shafts and capitals of the Temple C in the Selinunte Archaeological Site.Using mathematical auxiliary surfaces and NURBS modelling tools, textured highly-detailed meshes ...
Mirco Cannella
doaj  

A Hybrid Fractal-NURBS Model for Characterizing Material-Specific Mechanical Surface Contact

open access: yesMachines
The reliability of mechanical systems hinges on analyzing the actual surface-to-surface contact area, which critically influences dynamic behavior, friction, material performance, and thermal dissipation. Uneven surfaces lead to incomplete contact, where
Leilei Zhang   +4 more
doaj   +1 more source

格利森制弧齿锥齿轮的齿面曲率特性研究

open access: yesJixie chuandong, 2009
According to spiral bevel gear machining process,the discrete points’ three-dimensional coordinates of Gleason spiral bevel gear tooth surface is calculated through the method of computer simulation.
李大伟, 苏智剑
doaj  

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