Results 61 to 70 of about 24,008 (184)

Rotary 4D Printing of Programmable Metamaterials on Sustainable 4D Mandrel

Advanced Materials Technologies, Volume 11, Issue 1, 8 January 2026.
The paper introduces open, rotary 4D printing of programmable tubular metamaterials. It presents an open, non‐planar path‐to‐G‐code pipeline and shape‐changing rotary mandrel that enable support‐free fabrication and multi‐stimuli actuation. Experiments and FEA validate the mentioned features and stress redistribution.
Hesam Soleimanzadeh, Mahdi Bodaghi, Marzieh Jamalabadi, Bernard Rolfe, Ali Zolfagharian   +4 more
wiley   +1 more source

AUTOMATIC CONSTRUCTION OF NURBS SURFACES FROM UNORGANIZED POINTS

Dyna, 2011
El modelamiento con Superfi cies B-Splines Racionales no Uniformes (NURBS) se ha convertido en un estándar en los sistemas CAD/CAM debido a su estabilidad, fl exibilidad y propiedades de modifi cación local. Las ventajas de ajustar con superfi cies NURBS
NALLIG EDUARDO LEAL NARVÁEZ, ESMEIDE ALBERTO LEAL NARVÁEZ, JOHN WILLIAN BRANCH   +2 more
doaj  

Design and Construction of Spatial Curved Structures Based on Concrete Additive Manufacturing: A Case Study of an Irregular Gatehouse

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
This study confronts core challenges in concrete additive manufacturing (AM) for architectural applications. It specifically addresses the design–fabrication disconnection and absence of regulatory frameworks by proposing a multidisciplinary framework integrating parametric design, structural optimization, and robotic construction.
Songlin Bai, Xiaofei Yao, Min Yang, Shilong Liu, Yanfei Zhu, Adolfo Preciado   +5 more
wiley   +1 more source

From geometric design to numerical analysis: A direct approach using the Finite Cell Method on Constructive Solid Geometry

, 2017
During the last ten years, increasing efforts were made to improve and simplify the process from Computer Aided Design (CAD) modeling to a numerical simulation. It has been shown that the transition from one model to another, i.e.
Bog, Tino, Kollmannsberger, Stefan, Rank, Ernst, Wassermann, Benjamin   +3 more
core   +1 more source

A locking-free quadratic nurbs-based isogeometric formulation for plates analysis

Ho Chi Minh City Open University Journal of Science - Engineering and Technology, 2012
A new Reissner-Mindlin plate formulation based on a quadratic NURBS-based isogeometric is presented. In order to avoid the transverse shear locking and to improve the accuracy of the present formulation, the quadratic NURBS-based isogeometric is ...
Thai Hoang Chien, Nguyen Xuan Hung, Nguyen Thoi Trung   +2 more
doaj  

Renaissance vaults: geometry, nurbs and computational opportunities for reconstruction

Disegnare con, 2021
Creating an interpretative geometric representation of architectural shapes is crucial to learn the essence of any architecture, to preserve it and to hand it down through the ages to our descendants.
Cecilia Maria Bolognesi, Gabriele Stancato   +1 more
doaj  

Aerodynamic Characteristics Optimization Design of the HALE Joined‐Wing Configuration UAV

International Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.
This study investigates the factors influencing the aerodynamic performance enhancement of the rear wing of the joined‐wing configuration UAVs by analyzing the flow field structure and flow mechanisms before and after airfoil optimization. Correspondingly, an optimization design concept tailored to joined‐wing aircraft is proposed. Focusing on the rear
Junlei Sun, Zhou Zhou, TserendondogTengis, Jian Zhang, Rongchun Zhang   +4 more
wiley   +1 more source

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

Matrix-free weighted quadrature for a computationally efficient isogeometric $k$-method

, 2018
The $k$-method is the isogeometric method based on splines (or NURBS, etc.) with maximum regularity. When implemented following the paradigms of classical finite element methods, the computational resources required by the $k-$method are prohibitive even
Sangalli, Giancarlo, Tani, Mattia
core   +1 more source

Higher‐Order, Mixed‐Hybrid Finite Elements for Kirchhoff–Love Shells

International Journal for Numerical Methods in Engineering, Volume 126, Issue 21, 15 November 2025.
ABSTRACT A novel mixed‐hybrid method for Kirchhoff–Love shells is proposed that enables the use of classical, possibly higher‐order Lagrange elements in numerical analyses. In contrast to purely displacement‐based formulations that require higher continuity of shape functions as in isogeometric analysis (IGA), the mixed formulation features ...
Jonas Neumeyer, Michael Wolfgang Kaiser, Thomas‐Peter Fries   +2 more
wiley   +1 more source