Results 41 to 50 of about 6,844,739 (267)
A simple approach to the numerical simulation with trimmed CAD surfaces
, 2015 In this work a novel method for the analysis with trimmed CAD surfaces is presented. The method involves an additional mapping step and the attraction stems from its sim- plicity and ease of implementation into existing Finite Element (FEM) or Boundary ...
Beer, Gernot +2 more
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Physically-Based NURBS Surface Editing With Curves [PDF]
Computer-Aided Design and Applications, 2012 AbstractThis paper presents a physically-based approach for NURBS surface modification using curve handles. The approach consists of three steps: curve handle creation, target curve generation, and surface modification. The handle curve is a composite curve that is a composition of a NURBS surface and a 2D parametric curve defined in the parameter ...
Ma, Yuewen, Zheng, Jianmin, Wang, Kai
openaire +3 more sources
An isogeometric analysis for elliptic homogenization problems
, 2013 A novel and efficient approach which is based on the framework of isogeometric analysis for elliptic homogenization problems is proposed. These problems possess highly oscillating coefficients leading to extremely high computational expenses while using ...
Hoang, T. +2 more
core +1 more source
3D hybrid wound devices for spatiotemporally controlled release kinetics [PDF]
, 2012 This paper presents localized and temporal control of releasekinetics over 3-dimensional (3D) hybridwounddevices to improve wound-healing process. Imaging study is performed to extract wound bed geometry in 3D.
Koc, Bahattin +3 more
core +1 more source
Machines, 2023 As the applications for freeform optical surfaces continue to grow, the need for high-precision machining methods is becoming more and more of a necessity. Different toolpath strategies for the ultra-high precision turning of freeform surfaces can have a
Xuchu Wang +4 more
doaj +1 more source
Imaging freeform optical systems designed with NURBS surfaces
, 2016 . The designs of two imaging freeform systems using nonuniform rational basis-spline (NURBS) optical surfaces are described. The first system, a 10 deg×9 deg f/2 three-mirror anastigmat has four times higher spatial resolution over the image plane ...
M. Chrisp +2 more
semanticscholar +1 more source
Watermarking Algorithms for 3D NURBS Graphic Data
EURASIP Journal on Advances in Signal Processing, 2004 Two watermarking algorithms for 3D nonuniform rational B-spline (NURBS) graphic data are proposed: one is appropriate for the steganography, and the other for watermarking.
Jae Jun Lee, Nam Ik Cho, Sang Uk Lee
doaj +1 more source
Accuracy assessment of mine walls’ surface models derived from terrestrial laser scanning
International Journal of Coal Science & Technology, 2018 The monitoring of highwall slopes at open-pit mines is an important task to ensure safe mining. For this reason, several techniques such as total station, radar, terrestrial Light Detection and Ranging (LIDAR) can be employed for surface measurement. The
Nguyen Quoc Long +6 more
doaj +1 more source
Algorithms, 2022 In analysis of problems with parametric spline boundaries that are immersed or inserted into an underlying domain, the discretization on the underlying domain usually does not conform to the inserted boundaries.
Tao Song, Huanyu Liao, Ganesh Subbarayan
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NURBS-based geometric inverse reconstruction of free-form shapes
Journal of King Saud University: Computer and Information Sciences, 2017 In this study, a geometric inverse algorithm is proposed for reconstructing free-form shapes (curves and surfaces) in space from their arbitrary perspective images using a Non-Uniform Rational B-Spline (NURBS) model. In particular, NURBS model is used to
Deepika Saini +2 more
doaj +1 more source