Results 71 to 80 of about 917 (180)

Evaluation Algorithms for Parametric Curves and Surfaces

open access: yesMathematics
This paper extends Woźny and Chudy’s linear-complexity Bézier evaluation algorithm (2020) to all parametric curves/surfaces with normalized basis functions via a novel basis function matrix decomposition. The unified framework covers the following: (i) B-
Lanlan Yan
doaj   +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  

Conversion of trimmed NURBS surfaces to Catmull–Clark subdivision surfaces

open access: yesComputer Aided Geometric Design, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
JingJing Shen   +3 more
openaire   +3 more sources

Shape optimization of a flexible beam with a local shape feature based on ANCF

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
This paper proposes a shape optimization method of local shape features on a flexible beam modeled with the absolute nodal coordinate formulation (ANCF).
Gang HE   +4 more
doaj   +1 more source

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

Digital Unwrapping ed visualization of complex architectural surfaces for the documentation and the restoration

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  

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

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  

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

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