Results 11 to 20 of about 1,609 (163)

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

Modeling, 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, Lisbeth Fajstrup, Torben Ole Andersen, Per Johansen   +3 more
doaj   +1 more source

NURBS-based kinematic limit analysis of FRP-reinforced masonry walls with out-of-plane loading

Fracture and Structural Integrity, 2020
A three-dimensional (3D) general upper-bound limit analysis procedure for the determination of the collapse load of out-of-plane loaded masonry walls with Fiber Reinforced Polymer (FRP) reinforcement strips is presented.
Andrea Chiozzi, Nicola Grillanda, Gabriele Milani, Antonio Tralli   +3 more
doaj   +1 more source

Texture Mapping on NURBS Surface

Proceedings, 2018
Texture mapping allows high resolution details over 3D surfaces. Nevertheless, texture mapping has a number of unresolved problems such as distortion, boundary between textures or filtering. On the other hand, NURBS surfaces are usually decomposed into a
Sergio Vázquez, Margarita Amor
doaj   +1 more source

An Improved Method for NURBS Surface Based on Particle Swarm Optimization BP Neural Network

IEEE Access, 2020
In order to further improve the accuracy and speed of the present commonly used NURBS surface method, an improved method for NURBS surface based on particle swarm optimization BP neural network is proposed.
Xiaoqiang Tian, Lingfu Kong, Deming Kong, Li Yuan, Dehan Kong   +4 more
doaj   +1 more source

Fitting and fairing quad-meshes by matrix weighted NURBS surfaces(矩阵权NURBS曲面的拟合与光顺)

Zhejiang Daxue xuebao. Lixue ban, 2023
介绍了利用矩阵权非均匀有理 B-spline（non-uniform rational B-spline，NURBS）曲面拟合与光顺带法向的网格数据。通过输入带法向的规则四边形网格，以网格的顶点为曲面的控制顶点，用法向信息计算每个控制顶点对应的矩阵权，构造矩阵权NURBS曲面。与传统NURBS曲面相比，矩阵权NURBS曲面具有拟柱面精度，当数据均匀采样自光滑曲面时，构造的矩阵权NURBS曲面具有较好的光顺性且能很好地拟合网格模型；当输入的网格数据掺杂噪声时 ...
董国鑫(DONG Guoxin), 董国鑫(DONG Guoxin)   +1 more
doaj   +1 more source

Generating NURBS cladding and structures with parametric programming and BIM

PARC: 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, Lilian Maciel Furtado Silva, Ígor Lacroix   +2 more
doaj   +1 more source

Large Depth-of-Field, Large Eyebox, and Wide Field-of-View Freeform-Holographic Augmented Reality Near-Eye Display. [PDF]

Adv Sci (Weinh)
This study proposes an augmented reality (AR) near‐eye display system that simultaneously achieves a large depth‐of‐field (DOF) from 0.25 to 10 m, a wide 50° field‐of‐view (FOV), and a 10 mm × 10 mm viewing eyebox, while maintaining high display performance, good optical see‐through viewing capability, and a compact system form factor.
Wang Y, Yang T, Lyu X, Cheng D, Wang Y.
europepmc   +2 more sources

Size effects in nanostructured Li-ion battery cathode particles

Journal of the Mechanical Behavior of Materials, 2020
Cathode materials for Li-ion batteries exhibit volume expansions on the order of 10% upon maximum lithium insertion. As a result internal stresses are produced and after continuous electrochemical cycling damage accumulates, which contributes to their ...
Natarajan Sundararajan, Aifantis Katerina   +1 more
doaj   +1 more source

Isogeometric Resolution of the Brinkman-Forchheimer-Darcy [PDF]

Journal of Applied and Computational Mechanics
In this paper, we employ the finite element method based on non-uniform rational B-splines function approximation to solve the nonlinear Brinkman-Forcheimer-Darcy equation in a simply connected and bounded Lipschitz domain Ω.
Ouadie Koubaiti, Lahcen El Ouadefli, Ahmed Elkhalfi, Abdeslam El Akkad, Sorin Vlase, Marin Marin   +5 more
doaj   +1 more source

NURBS-Based Parametric Design for Ship Hull Form

Journal of Marine Science and Engineering, 2022
Recently, the NURBS technique has been widely used in the 3D design software for ships. However, in most research, the NURBS technique is only applied to the mathematical representation of hull curves and surfaces, and the parametric deformation of hull ...
Hui Zhou, Baiwei Feng, Zuyuan Liu, Haichao Chang, Xide Cheng   +4 more
doaj   +1 more source