Results 91 to 100 of about 2,313 (216)

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  

Triangulation Of NURBS Surfaces

open access: yes, 1994
A technique is presented for triangulation of NURBS surfaces. This technique is built upon an advancing front technique combined with grid point projection. This combined approach has been successfully implemented for structured and unstructured grids. 2
Jamshid Samareh-abolhassani
core  

Corrective Abrasive Polishing Processes for Freeform Surface [PDF]

open access: yes, 2009
Traditionally, abrasive finishing process only focused on producing excellent surface finish on regular form shapes. Ever increasing demands in freeform features in aerospace, energy and medicine applications require abrasive finishing technology not ...
Chen, Xun
core   +1 more source

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  

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

Physics-based NURBS swung surfaces

open access: yes, 1994
We develop a dynamic, free-form surface model which is useful for representing a broad class of objects with symmetries and topological variability. The new model is based upon swung NURBS surfaces, and it inherits their desirable cross-sectional design ...
Demetri Terzopoulos, Hong Qin
core  

Exact and approximate representations of trimmed surfaces with NURBS and Bézier surfaces

open access: yes, 2009
A trimmed surface is usually represented as a parametric surface with a set of trimming curves. However, many CAD processes and algorithms cannot be applied to trimmed surfaces directly because of the complexity in manipulating trimmed surfaces. Moreover,
Chen, Falai, Xin Li, Falai Chen, Li, Xin
core   +1 more source

An algorithm for multi-resolution analysis of NURBS surfaces

open access: yesComputers & Mathematics with Applications, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Aizeng Wang, Gang Zhao 0007
openaire   +1 more source

Fast generation of 3D deformable moving surfaces

open access: yes, 2003
Dynamic surface modeling is an important subject of geometric modeling due to their extensive applications in engineering design, entertainment and medical visualization.
Zhang, Jian J., You, L.H.
core   +1 more source

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