Results 91 to 100 of about 6,844,739 (267)

Parallel ray tracing through freeform lenses with NURBS surfaces

open access: yesChinese Optics Letters (COL), 2023
Haisong Tang   +3 more
semanticscholar   +1 more source

Spline‐Based Framework for Microscopic Contact Zone Modeling in Lubricated Orthogonal Cutting

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 126, Issue 14, 30 July 2025.
ABSTRACT Accurately predicting the coefficient of friction between tool, chip, and workpiece during machining is essential for a reliable and cost‐effective process. In this context, current numerical methods are often based on homogenized approaches with friction models that use constant friction coefficients; thus, failing to capture local effects ...
Jaewook Lee   +9 more
wiley   +1 more source

An Innovative Method to Model Sheet Parts as a Watertight Geometry Based on T-Spline Technology

open access: yesIEEE Access
In sheet part design the product’s initial geometric model is often used between different professional teams. Heavy work relies on the quality of the geometric model, wherein the watertightness of the model’s surfaces is an important ...
Dawei Wang   +5 more
doaj   +1 more source

Analysis of Antennas around NURBS Surfaces by Using a Hybrid Method [PDF]

open access: yesRadioengineering, 2018
To fast and accurately calculate the EM scattering problems like radiation of antenna around complex objects, many different techniques have been performed.
T. Okan, N. Akcam
doaj  

The Generation of 3D Surface Meshes for NURBS-Enhanced FEM

open access: hybrid, 2023
Xi Zou   +4 more
openalex   +2 more sources

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

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

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