Results 1 to 10 of about 6,889 (229)

An explicit and rapid intersection algorithm of plane and NURBS surface in CNC surface machining [PDF]

open access: yesScientific Reports
To address the challenge of plane-surface intersection in toolpath planning for CNC surface machining, a rapid intersection algorithm between a plane and a NURBS surface is proposed, which can provide an explicit Non-Uniform Rational B-Spline (NURBS ...
Shengli Wei   +3 more
doaj   +2 more sources

NURBS-Diff: A Differentiable Programming Module for NURBS [PDF]

open access: yesComputer-Aided Design, 2022
Boundary representations (B-reps) using Non-Uniform Rational B-splines (NURBS) are the de facto standard used in CAD, but their utility in deep learning-based approaches is not well researched.
Hegde, Chinmay   +5 more
core   +4 more sources

Optimized dual NURBS curve interpolation for high-accuracy five-axis CNC path planning [PDF]

open access: yesScientific Reports
As the demand for high-precision and high-efficiency machining increases in modern industrial manufacturing, five-axis CNC systems have become the primary solution for complex surface processing.
Yi Xu, Mohd Hairi Mohd Zaman, Feng Zhou
doaj   +2 more sources

On nonparametric estimating ROC curve based on non-uniform rational B-spline. [PDF]

open access: yesPLoS ONE
The receiver operating characteristic (ROC) curve is a commonly used statistical method to assess the efficacy of a diagnostic test or biomarker measured on a continuous scale. This work presents a versatile approach using a non-uniform rational B-spline
Mahmut Sami Erdoğan
doaj   +2 more sources

Interactive Rendering of NURBS Surfaces [PDF]

open access: yesComputer-Aided Design, 2014
[Abstract] NURBS (Non-uniform rational B-splines) surfaces are one of the most useful primitives employed for high quality modeling in CAD/CAM tools and graphics software. Since direct evaluation of NURBS surfaces on the GPU is a highly complex task, the
Concheiro, Raquel   +3 more
core   +4 more sources

Watertight trimmed NURBS

open access: yesACM Transactions on Graphics, 2008
This paper addresses the long-standing problem of the unavoidable gaps that arise when expressing the intersection of two NURBS surfaces using conventional trimmed-NURBS representation. The solution converts each trimmed NURBS into an untrimmed T-Spline,
Thomas W Sederberg
exaly   +2 more sources

AUTOMATIC CONSTRUCTION OF NURBS SURFACES FROM UNORGANIZED POINTS [PDF]

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   +1 more source

Generation of a Quadrilateral Mesh based on NURBS for Gyroids ‎of Variable Thickness and Porosity [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2022
The Gyroid is a periodic minimal surface explored in different applications, such as architecture and nanotechnology. The general topology is suitable for the construction of porous structures.
Mariana Flores-Jimenez   +3 more
doaj   +1 more source

The Application of the Extended Isogeometric Analysis (XIGA) with K-Refinement Approach for the Prediction of Fatigue Life in Linear Elastic Fracture Mechanic [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2022
This study investigates the fatigue life of a cracked plate subjected to cyclic load under linear elastic fracture mechanics, using a numerical method of extended isogeometric analysis (XIGA) with a K-refinement approach.
Ata Fardaghaie   +2 more
doaj   +1 more source

ON COMPARISON OF 3D ISOGEOMETRIC TIMOSHENKO AND BERNOULLI BEAM FORMULATIONS

open access: yesActa Polytechnica CTU Proceedings, 2021
Application of isogeometric analysis (IGA) for curved beams is very convenient for its ability of exact representation of curved geometries. Several beam formulation has been presented since the introduction of IGA.
Edita Dvořáková, Bořek Patzák
doaj   +1 more source

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