Results 21 to 30 of about 2,313 (216)

Procedural Reconstruction of NURBS Surfaces

open access: yesCAADRIA proceedings, 2009
A potential way to bridge the gap between complex form generation and models for physical manifestations is to panelize NURBS surfaces with polygonal faces.
T.H. Wang
core   +2 more sources

Polar NURBS Surface with Curvature Continuity [PDF]

open access: yesComputer Graphics Forum, 2013
AbstractPolar NURBS surface is a kind of periodic NURBS surface, one boundary of which shrinks to a degenerate polar point. The specific topology of its control‐point mesh offers the ability to represent a cap‐like surface, which is common in geometric modeling.
Shi, Kan-Le   +4 more
openaire   +3 more sources

Creeping-ray tracing algorithm for arbitrary NURBS surfaces based on adaptive variable step Euler method

open access: yesDianzi Jishu Yingyong, 2018
Although the uniform theory of diffraction(UTD) could be theoretically applied to arbitrarily-shaped convex objects modeled by non-uniform rational b-splines(NURBS), one of the great challenges in calculation of the UTD surface diffracted fields is the ...
Cao Tuo, Fu Song, He Siyuan
doaj   +1 more source

NURBS-Python: An open-source object-oriented NURBS modeling framework in Python

open access: yesSoftwareX, 2019
We introduce NURBS-Python, an object-oriented, open-source, Pure Python NURBS evaluation library with no external dependencies. The library is capable of evaluating single or multiple NURBS curves and surfaces, provides a customizable visualization ...
Onur Rauf Bingol, Adarsh Krishnamurthy
doaj   +1 more source

Generating NURBS cladding and structures with parametric programming and BIM

open access: yesPARC: Pesquisa em Arquitetura e Construção, 2020
The process of designing and building curvilinear architectures is still challenging. The use of multiple applications with distinctive design paradigms are unlikely to disappear. The interoperability used here was not only the conventional one.
Neander Furtado Silva   +2 more
doaj   +1 more source

3D Measurement and Characterization of Ultra-precision Aspheric Surfaces [PDF]

open access: yes, 2014
Aspheric surfaces have become widely used in various fields ranging from imaging systems to energy and biomedical applications. Although many researches have been conducted to address their manufacturing and measurement, there are still challenges in ...
ANWER, Nabil   +11 more
core   +1 more source

NURBS curves and surfaces

open access: yes, 2021
NURBS curves and surfaces used for sampling ...
Cheng, X (via Mendeley Data)
core   +1 more source

Rotation-Angle Solution and Singularity Handling of Five-Axis Machine Tools for Dual NURBS Interpolation

open access: yesMachines, 2023
Dual NURBS interpolation has been proven an essential technique for high-speed precision machining of complex surfaces. The solution of rotation angles and their derivatives is the basis of kinematic transformation and feedrate optimization in dual NURBS
Pengpeng Sun   +4 more
doaj   +1 more source

An Improvement on the Upper Bounds of the Partial Derivatives of NURBS Surfaces

open access: yesMathematics, 2020
The Non-Uniform Rational B-spline (NURBS) surface not only has the characteristics of the rational Bézier surface, but also has changeable knot vectors and weights, which can express the quadric surface accurately.
Ye Tian   +4 more
doaj   +1 more source

An Isogeometric Analysis Approach to Kinematics of Spatial Rigid Multibody Systems with Imperfect Joints [PDF]

open access: yesModeling, Identification and Control, 2020
This paper proposes a novel generic methodology for kinematics of spatial rigid-multibody systems with and without lubricated joints. In this method CAD surface representations in the form of non-uniform rational B-splines (NURBS) are used to address the
Remzija Cerimagic   +3 more
doaj   +1 more source

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