Results 31 to 40 of about 31,947 (163)

Adaptive refinement for unstructured T-splines with linear complexity

open access: yesComputer Aided Geometric Design, 2022
We present an adaptive refinement algorithm for T-splines on unstructured 2D meshes. While for structured 2D meshes, one can refine elements alternatingly in horizontal and vertical direction, such an approach cannot be generalized directly to unstructured meshes, where no two unique global mesh directions can be assigned.
Roland Maier   +2 more
openaire   +3 more sources

Optimal recovery of mappings based on linear information with the help of $T$-splines in Banach spaces

open access: yesResearches in Mathematics
This work is dedicated to solving problems of optimal recovery of operator $A$ (not necessarily linear), defined on a subset $\mathfrak{M}$ of a Banach space $H$ using information about elements of the $\mathfrak{M}$, given by a linear bounded operator $
V.F. Babenko   +2 more
doaj   +1 more source

T-Spline Polygonal Complexes [PDF]

open access: yesProceedings of CAD'14, 2014
ABSTRACTThe notion of polygonal complexes was originally conceived as a means for exact interpolation of uniform B-spline curves by Doo-Sabin (and later on by Catmull-Clark) subdivision surfaces. Starting from the theoretical origin of these complexes, this paper provides a general formulation of this notion that covers all quad-based (uniform/non ...
openaire   +2 more sources

Towards B-Spline Atomic Structure Calculations

open access: yesAtoms, 2021
The paper reviews the history of B-spline methods for atomic structure calculations for bound states. It highlights various aspects of the variational method, particularly with regard to the orthogonality requirements, the iterative self-consistent ...
Charlotte Froese Fischer
doaj   +1 more source

Integrate the Isogeometric Analysis Approach Based on the T-Splines Function for the Numerical Study of a Liquefied Petroleum Gas (LPG) Cylinder Subjected to a Static Load

open access: yesApplied Sciences
LGP cylinders are necessary for fuel storage and home heating. To avoid material and human risk, it is essential to maintain their structural integrity. Extensive mechanical research studies and physical tests are necessary for its design.
Said ELFakkoussi   +4 more
doaj   +1 more source

Construction of smooth branching surfaces using T-splines [PDF]

open access: yesComputer-Aided Design, 2017
The request for designing or reconstructing objects from planar cross sections arises in various applications, ranging from CAD to GIS and Medical Imaging. The present work focuses on the one-to-many branching problem, where one of the planes can be populated with many, possibly tortuous and densely packed, contours.
A.I. Ginnis, K.V. Kostas, P.D. Kaklis
openaire   +1 more source

Decreased thymic output predicts progression of chronic kidney disease

open access: yesImmunity & Ageing, 2023
Background Chronic kidney disease (CKD) is age-related disease, and decreased renal function is associated with the premature aging of T cells and increased incidence of other age-related diseases.
Kenichiro Iio   +9 more
doaj   +1 more source

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

open access: yesAxioms
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.
Said EL Fakkoussi   +4 more
doaj   +1 more source

T-Spline Based Unifying Registration Procedure for Free-Form Surface Workpieces in Intelligent CMM

open access: yesApplied Sciences, 2017
With the development of the modern manufacturing industry, the free-form surface is widely used in various fields, and the automatic detection of a free-form surface is an important function of future intelligent three-coordinate measuring machines (CMMs)
Zhenhua Han   +5 more
doaj   +1 more source

de Boor-suitable (DS) T-splines

open access: yesGraphical Models, 2018
Abstract We investigate necessary and sufficient conditions under which the de Boor algorithm can be applied to evaluate points on a T-spline surface. We compare these de Boor-suitable (DS) T-splines to the standard analysis-suitable (AS) T-splines. We also develop an algorithm to search in a T-mesh for the appropriate control points and blend them ...
Yang Zhang   +2 more
openaire   +2 more sources

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