Discretization of Non-uniform Rational B-Spline (NURBS) Models for Meshless Isogeometric Analysis. [PDF]
J Sci ComputAbstractWe present an algorithm for fast generation of quasi-uniform and variable-spacing nodes on domains whose boundaries are represented as computer-aided design (CAD) models, more specifically non-uniform rational B-splines (NURBS). This new algorithm enables the solution of partial differential equations within the volumes enclosed by these CAD ...
Duh U, Shankar V, Kosec G.
europepmc +6 more sources
Automatic Explainable Segmentation of Abdominal Aortic Aneurysm From Computed Tomography Angiography [PDF]
IEEE AccessThis work presents an automated deep learning (DL) based framework for segmenting abdominal aortic aneurysm (AAA) in contrast-enhanced computed tomography angiography (CTA) images, which was developed to support AAA screening and analysis.
Merjulah Roby +5 more
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Three-dimensional reconstruction of industrial parts from a single image [PDF]
Visual Computing for Industry, Biomedicine, and ArtThis study proposes an image-based three-dimensional (3D) vector reconstruction of industrial parts that can generate non-uniform rational B-splines (NURBS) surfaces with high fidelity and flexibility. The contributions of this study include three parts:
Zhenxing Xu +3 more
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An explicit and rapid intersection algorithm of plane and NURBS surface in CNC surface machining [PDF]
Scientific ReportsTo address the challenge of plane-surface intersection in toolpath planning for CNC surface machining, a rapid intersection algorithm between a plane and a NURBS surface is proposed, which can provide an explicit Non-Uniform Rational B-Spline (NURBS ...
Shengli Wei +3 more
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Flexible control and trajectory planning of medical two-arm surgical robot [PDF]
Frontiers in NeuroroboticsThis 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 +4 more
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Isogeometric modeling and vibroacoustic analysis of a symmetrically laminated thin plate coupled with an acoustic cavity [PDF]
Scientific ReportsThis study presents vibroacoustic modeling and analysis of symmetrically laminated thin plate-cavity coupled systems. The plate, cavity, and their coupling are characterized by classical plate theory, the Helmholtz equation, and a displacement–pressure ...
Yaqiang Xue +3 more
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Automatic Segmentation of Abdominal Aortic Aneurysm From Computed Tomography Angiography Using a Patch-Based Dilated UNet Model [PDF]
IEEE AccessAbdominal Aortic Aneurysm (AAA) is still a socially relevant public health challenge, evidenced by an 82.1% increase in associated fatalities from 1990 to 2019 (with 172,427 deaths in 2019 alone).
Merjulah Roby +6 more
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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 +5 more
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An Isogeometric Analysis Approach to Kinematics of Spatial Rigid Multibody Systems with Imperfect Joints [PDF]
Modeling, Identification and Control, 2020 This paper proposes a novel generic methodology for kinematics of spatial rigid-multibody systems with and without lubricated joints. In this method CAD surface representations in the form of non-uniform rational B-splines (NURBS) are used to address the
Remzija Cerimagic +3 more
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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 +16 more
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