Results 31 to 40 of about 5,264 (176)

Analysis of the Flow Field from Connection Cones to Monolith Reactors

Energies, 2019
The connection cones between an exhaust pipe and an exhaust after-treatment system (EATS) will affect the flow into the first monolith. In this study, a new streamlined connection cone using non-uniform rational B-splines (NURBS) is applied to optimize ...
Mingfei Mu, Jonas Sjöblom, Henrik Ström, Xinghu Li   +3 more
doaj   +1 more source

Optimal Design of Grooved Cam Profile Using Non-uniform Rational B-splines

MATEC Web of Conferences, 2017
In order to reduce the fatigue damage in grooved cam mechanisms, grooved cam profile was reconstructed with non-uniform rational B-splines (NURBS). Considering joint friction, dynamic model of grooved cam mechanisms was established and the contact stress
Xuan Guantao, Shao Yuanyuan, Liu Lei
doaj   +1 more source

Numerical integration over 2D NURBS-shaped domains with applications to NURBS-enhanced FEM [PDF]

, 2011
This paper focuses on the numerical integration of polynomial functions along non-uniform rational B-splines (NURBS) curves and over 2D NURBS-shaped domains, i.e. domains with NURBS boundaries.
Fernández Méndez, Sonia, Sevilla Cárdenas, Rubén   +1 more
core   +2 more sources

Local and Global Approaches to Fracture Mechanics Using Isogeometric Analysis Method

Journal of Applied and Computational Mechanics, 2015
In the present research, implementations of different computational geometry technologies in isogeometric analysis framework for computational fracture mechanics are investigated.
Abdolghafoor Khademalrasoul, Reza Naderi
doaj   +1 more source

Research on the S-shaped time-rounding series feedrate scheduling based on NURBS curve

Advances in Mechanical Engineering, 2022
The inconsistency between continuous feedrate scheduling and discrete interpolation of Non-Uniform Rational B-Splines (NURBS) curves as toolpath interpolation affects the interpolation accuracy and motion smoothness of computer numerical control (CNC ...
Jichun Wu, Ke Xu, Guangan Ren, Dapeng Fan   +3 more
doaj   +1 more source

Fitting Terrestrial Laser Scanner Point Clouds with T-Splines: Local Refinement Strategy for Rigid Body Motion

Remote Sensing, 2021
T-splines have recently been introduced to represent objects of arbitrary shapes using a smaller number of control points than the conventional non-uniform rational B-splines (NURBS) or B-spline representatizons in computer-aided design, computer ...
Gaël Kermarrec, Niklas Schild, Jan Hartmann   +2 more
doaj   +1 more source

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

NURBS-Based Isogeometric Analysis Method Application to Mixed-Mode Computational Fracture Mechanics [PDF]

Journal of Applied and Computational Mechanics, 2019
An interaction integral method for evaluating mixed-mode stress intensity factors (SIFs) for two dimensional crack problems using NURBS-based isogeometric analysis method is investigated. The interaction integral method is based on the path independent J-
Abdolghafour Khademalrasoul
doaj   +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

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