Results 11 to 20 of about 814 (179)

Flexible control and trajectory planning of medical two-arm surgical robot [PDF]

Frontiers in Neurorobotics
This paper introduces the flexible control and trajectory planning medical two-arm surgical robots, and employs effective collision detection methods to ensure the safety and precision during tasks.
Yanchun Xie, Xue Zhao, Yang Jiang, Yao Wu, Hailong Yu   +4 more
doaj   +2 more sources

Numerical Analysis of the Cylindrical Shell Pipe with Preformed Holes Subjected to a Compressive Load Using Non-Uniform Rational B-Splines and T-Splines for an Isogeometric Analysis Approach

Axioms
In this paper, we implement the finite detail technique primarily based on T-Splines for approximating solutions to the linear elasticity equations in the connected and bounded Lipschitz domain.
Sorin Vlase, Ouadie Koubaiti, Marin Marin   +2 more
exaly   +3 more sources

IG-LSPIA: Least Squares Progressive Iterative Approximation for Isogeometric Collocation Method

Mathematics, 2023
The isogeometric collocation method (IGA-C), which is a promising branch of isogeometric analysis (IGA), can be considered fitting the load function with the combination of the numerical solution and its derivatives.
Yini Jiang, Hongwei Lin
doaj   +1 more source

Mixed Isogeometric Analysis of the Brinkman Equation

Mathematics, 2023
This study focuses on numerical solution to the Brinkman equation with mixed Dirichlet–Neumann boundary conditions utilizing isogeometric analysis (IGA) based on non-uniform rational B-splines (NURBS) within the Galerkin method framework.
Lahcen El Ouadefli, Omar El Moutea, Abdeslam El Akkad, Ahmed Elkhalfi, Sorin Vlase, Maria Luminița Scutaru   +5 more
doaj   +1 more source

Innovative tooth contact analysis with non-uniform rational b-spline surfaces [PDF]

Forschung im Ingenieurwesen, 2021
AbstractMore and more simulation tools are being used in the development of gears in order to save development time and costs while improving the gears. BECAL is a comprehensive software tool for the tooth contact analysis (TCA) of bevel, hypoid, beveloid and spur gears.
F. Muller, S. Schumann, B. Schlecht
openaire   +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

Sensitivity analysis of flexoelectric materials surrogate model based on the isogeometric finite element method

Frontiers in Physics, 2022
In this paper proposes a sensitivity analysis method based on a Polynomial Chaos Expansion (PCE) surrogate model for flexoelectric materials. The non-uniform rational B-splines (NURBS) basis functions to discretize the fourth-order partial differential ...
Haozhi Li, Haozhi Li, Haozhi Li, Juan Zhao, Juan Zhao, Juan Zhao, Xiaokun Guo, Xiaokun Guo, Xiaokun Guo, Yu Cheng, Yu Cheng, Yu Cheng, Yanmin Xu, Yanmin Xu, Xiaohui Yuan, Xiaohui Yuan, Xiaohui Yuan   +16 more
doaj   +1 more source

On the limits of non-uniform rational B-spline surfaces with varying weights [PDF]

Advances in Mechanical Engineering, 2017
The non-uniform rational B-spline is a mathematical model commonly used in computer-aided design and manufacturing. For a non-uniform rational B-spline surface, when a single weight approaches infinity, the surface tends to the corresponding control point. A natural question is that what happens if all of the weights approach infinity. In this article,
Yue Zhang, Chun-Gang Zhu, Qing-Jie Guo
openaire   +2 more sources

Industrial Robot Contouring Control Based on Non-Uniform Rational B-Spline Curve

Symmetry, 2022
This paper presents a novel algorithm about the industrial robot contouring control based on the NURBS (non-uniform rational B-spline) curve. First, aiming at the error between the industrial robot’s actual trajectory and the desired trajectory, the contour error is proposed as the trajectory evaluation index, and the estimation algorithm of contour ...
Guirong Wang, Jiahao Chen, Kun Zhou, Zhihui Pang   +3 more
openaire   +1 more source

An efficient data structure for calculation of unstructured T-spline surfaces

Visual Computing for Industry, Biomedicine, and Art, 2019
To overcome the topological constraints of non-uniform rational B-splines, T-splines have been proposed to define the freeform surfaces. The introduction of T-junctions and extraordinary points makes it possible to represent arbitrarily shaped models by ...
Wei Wang, Yang Zhang, Xiaoxiao Du, Gang Zhao   +3 more
doaj   +1 more source