Results 31 to 40 of about 5,254 (164)

3D NURBS-enhanced finite element method (NEFEM) [PDF]

, 2011
This paper presents the extension of the recently proposed NURBS-enhanced finite element method (NEFEM) to 3D domains. NEFEM is able to exactly represent the geometry of the computational domain by means of its CAD boundary representation with non ...
Balanis, Chen, Cirak, Donea, Hachemi, Harrington, Hesthaven, Hughes, Huttunen, Inoue, Kangro, Ledger, Ledger, LeVeque, Morgan, Natekar, Piegl, Rayasam, Renken, Schuh, Sevilla, Sevilla, Szabó, Taflove, Wandzura, Warburton, Woo, Xue, Zienkiewicz   +28 more
core   +1 more source

Variational Formulations and Isogeometric Analysis of Timoshenko–Ehrenfest Microbeam Using a Reformulated Strain Gradient Elasticity Theory

Crystals, 2022
This paper presents a novel non-classical Timoshenko–Ehrenfest beam model based on a reformulated strain gradient elasticity theory. The strain gradient effect, couple stress effect, and velocity gradient effect for vibration are included in the new ...
Shuohui Yin, Zhibing Xiao, Jingang Liu, Zixu Xia, Shuitao Gu   +4 more
doaj   +1 more source

Contact Modelling in Isogeometric Analysis: Application to Sheet Metal Forming Processes [PDF]

, 2016
Isogeometric Analysis (IGA) has been growing in popularity in the past few years essentially due to the extra exibility it introduces with the use of higher degrees in the basis functions leading to higher convergence rates.
Austin Cottrell J., D. Adan, O.B. Adetoro, Piegl Les, Rui P.R. Cardoso   +4 more
core   +1 more source

Comparative Analysis of NURBS and Finite Element Method in Computational Fluid Dynamics Applications: Case Study on NACA 2412 Airfoil Aerodynamics

Mathematics
In this research, an attempt was made to employ the Non-Uniform Rational B-Splines (NURBS) method for a challenging computational fluid dynamics (CFD) problem of aerodynamics around NACA 2412 airfoils.
Sohaib Guendaoui, Lahcen El Ouadefli, Abdeslam El Akkad, Ahmed Elkhalfi, Sorin Vlase, Maria Luminița Scutaru   +5 more
doaj   +1 more source

Isogeometric Fast Multipole Boundary Element Method Based on Burton-Miller Formulation for 3D Acoustic Problems

Archives of Acoustics, 2019
An isogeometric boundary element method is applied to simulate wave scattering problems governed by the Helmholtz equation. The NURBS (non-uniform rational B-splines) widely used in the CAD (computer aided design) field is applied to represent the ...
Leilei CHEN, Wenchang ZHAO, Cheng LIU, Haibo CHEN, Steffen MARBURG   +4 more
doaj   +1 more source

Upper bound limit analysis of plates using a rotation-free isogeometric approach [PDF]

, 2014
International audienceThis paper presents a simple and effective formulation based on a rotation-free isogeometric approach for the assessment of collapse limit loads of plastic thin plates in bending.
Bleyer, Jérémy, Chien, Hoang,, Nguyen, Phu,, Nguyen-Xuan, Hung   +3 more
core   +4 more sources

A Physical Process Driven Digital Terrain Model Generating Method Based on D-NURBS

IEEE Access, 2020
Airborne light detection and ranging (LiDAR) technology is becoming the primary method for generating high-resolution digital terrain models (DTMs), which is essential for commercial and scientific uses.
Danlei Ye, Xin Jiang, Guanying Huo, Cheng Su, Zehong Lu, Bolun Wang, Zhiming Zheng   +6 more
doaj   +1 more source

Efficient Culling Techniques for Interactive Deformable NURBS Surfaces on GPU [PDF]

, 2016
[Abstrtact] InfoValue: NURBS (Non-uniform rational B-splines) surfaces are the standard freeform representation in Computer-Aided Design (CAD) applications.
Amor, Margarita, Concheiro, Raquel, Doggett, Michael, Padrón, Emilio J.   +3 more
core   +1 more source

A New Path Generation Algorithm Based on Accurate NURBS Curves

International Journal of Advanced Robotic Systems, 2016
The process of finding an optimum, smooth and feasible global path for mobile robot navigation usually involves determining the shortest polyline path, which will be subsequently smoothed to satisfy the requirements. Within this context, this paper deals
Sawssen Jalel, Philippe Marthon, Atef Hamouda   +2 more
doaj   +1 more source

Comparing cranial biomechanics between Barbourofelis fricki and Smilodon fatalis: Is there a universal killing‐bite among saber‐toothed predators?

The Anatomical Record, Volume 308, Issue 11, Page 2962-2975, November 2025.
Abstract Saber‐tooths, extinct apex predators with long and blade‐like upper canines, have appeared iteratively at least five times in the evolutionary history of vertebrates. Although saber‐tooths exhibit a relatively diverse range of morphologies, it is widely accepted that all killed their prey using the same predatory behavior. In this study, we CT‐
Borja Figueirido, Shane Tucker, Stephan Lautenschlager   +2 more
wiley   +1 more source