Results 51 to 60 of about 1,609 (163)

Watertight trimmed NURBS

ACM SIGGRAPH 2008 papers, 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, and then merges the untrimmed T-Splines into a single, watertight model.
Thomas W. Sederberg, G. Thomas Finnigan, Xin Li, Hongwei Lin, Heather Ipson   +4 more
openaire   +2 more sources

Procedural Multiscale Geometry Modeling using Implicit Surfaces

Computer Graphics Forum, Volume 44, Issue 7, October 2025.
Abstract Materials exhibit geometric structures across mesoscopic to microscopic scales, influencing macroscale properties such as appearance, mechanical strength, and thermal behavior. Capturing and modeling these multiscale structures is challenging but essential for computer graphics, engineering, and materials science.
Bojja Venu, Adam Bosak, Juan Raúl Padrón‐Griffe   +2 more
wiley   +1 more source

Least‐Squares Projected Models for Non‐Intrusive Affinization of Reduced Basis Methods

International Journal for Numerical Methods in Engineering, Volume 126, Issue 18, 30 September 2025.
ABSTRACT Reduced‐basis methods (RBMs) constitute a promising technique for delivering numerical solutions of parameterized PDEs in real time and with reasonable accuracy. The most significant drawback of RBMs is the requirement of parametric affinity, a condition that only very trivial problems satisfy.
E. Fonn, H. v. Brummelen, J. L. Eftang, T. Rusten, K. A. Johannessen, T. Kvamsdal, A. Rasheed   +6 more
wiley   +1 more source

Multi‐Physically Programmable Tubular Origami Metamaterials: Exploitable Nexus of Geometry, Folding Mechanics and Stimuli‐Responsive Physics

Advanced Science, Volume 12, Issue 36, September 25, 2025.
This article presents an insightful review on the exploitable nexus of geometry, folding mechanics and stimuli‐responsive physics for achieving active programmability in tubular origami metamaterials and metastructures, highlighting the broad‐spectrum potential in innovative applications across the length scales, along with critically analysing the ...
A. Sharma, S. Naskar, T. Mukhopadhyay
wiley   +1 more source

Simulating and correcting the pileup effect in deep‐silicon photon‐counting CT

Medical Physics, Volume 52, Issue 8, August 2025.
Abstract Background Photon‐counting computed tomography (CT) bears promise to substantially improve spectral and spatial resolution. One reason for the relatively slow evolution of photon‐counting detectors in CT—the technology has been used in nuclear medicine and planar radiology for decades—is pulse pileup, that is, the random staggering of pulses ...
Erik Fredenberg, Daniel Collin, Louis Carbonne, Mingye Wu, Bruno De Man, Fredrik Grönberg   +5 more
wiley   +1 more source

Módulo para el modelado de cascos de buques a partir de los planos de forma y la realización de los cálculos hidrostáticos

Serie Científica de la Universidad de las Ciencias Informáticas, 2019
En el presente trabajo se exponen los resultados de un proceso destinado al desarrollo de funcionalidades para el modelado por computadora de cascos de embarcaciones, encapsuladas en un módulo informático.
Kevin Pérez Mandina, Augusto César Rodríguez Medina   +1 more
doaj  

Homogenization of composite materials reinforced with unidirectional fibres with complex curvilinear cross section: a virtual element approach

Mathematics in Engineering
The paper presents an augmented curvilinear virtual element method to determine homogenized in-plane shear material moduli of long-fibre reinforced composites in the framework of asymptotic homogenization method.
E. Artioli , G. Elefante, A. Sommariva, M. Vianello   +3 more
doaj   +1 more source

Parametric modeling for automated intelligent design of concrete beam bridges: A global and local optimization approach

Structural Concrete, Volume 26, Issue 4, Page 4083-4102, August 2025.
Abstract The structural design of prestressed concrete girders in beam bridges is performed by coupling 3D parametric modeling, optimization, and statistical techniques, structural analysis, and design. The objective is to explore the potential and advantages of advanced design methodologies based on intelligent design.
Vinicius Nascimento de Moraes, Thomaz Eduardo Teixeira Buttignol   +1 more
wiley   +1 more source

One‐Shot Method for Computing Generalized Winding Numbers

Computer Graphics Forum, Volume 44, Issue 5, August 2025.
Abstract The generalized winding number is an essential part of the geometry processing toolkit, allowing to quantify how much a given point is inside a surface, even when the surface has boundaries and noise. We propose a new universal method to compute a generalized winding number, based only on the surface boundary and the intersections of a single ...
C. Martens, M. Bessmeltsev
wiley   +1 more source

Nonintrusive Local/Global Coupling With Local Deep Learning‐Based Models for the Effective Simulation of Spotwelded Structures Under Impact

International Journal for Numerical Methods in Engineering, Volume 126, Issue 14, 30 July 2025.
ABSTRACT The article tackles the challenge of effective modeling and simulation of large mechanical structures exhibiting numerous local complex behaviors, as encountered with spot welds in automotive crash numerical analysis. To address this challenge, we propose a nonintrusive local/global coupling strategy, where the local model is a neural network ...
Afsal Pulikkathodi, Ludovic Chamoin, Elisabeth Lacazedieu, Juan Pedro Berro Ramirez, Laurent Rota, Malek Zarroug   +5 more
wiley   +1 more source