Results 21 to 30 of about 5,264 (176)

An Isogeometric Bézier Finite Element Method for Vibration Optimization of Functionally Graded Plate with Local Refinement

open access: yesCrystals, 2022
An effective free vibration optimization procedure in combination with the isogeometric approach (IGA), particle swarm optimization (PSO) and an integrated global and local parameterization is presented.
Xing Wei, Dongdong Liu, Shuohui Yin
doaj   +1 more source

Powell-Sabin B-splines and unstructured standard T-splines for the solution of the Kirchhoff-Love plate theory exploiting Bézier extraction [PDF]

open access: yes, 2016
The equations that govern Kirchhoff–Love plate theory are solved using quadratic Powell–Sabin B-splines and unstructured standard T-splines. Bézier extraction is exploited to make the formulation computationally efficient.
Bazilevs   +43 more
core   +1 more source

NURBS-Python: An open-source object-oriented NURBS modeling framework in Python

open access: yesSoftwareX, 2019
We introduce NURBS-Python, an object-oriented, open-source, Pure Python NURBS evaluation library with no external dependencies. The library is capable of evaluating single or multiple NURBS curves and surfaces, provides a customizable visualization ...
Onur Rauf Bingol, Adarsh Krishnamurthy
doaj   +1 more source

Creeping-ray tracing algorithm for arbitrary NURBS surfaces based on adaptive variable step Euler method

open access: yesDianzi Jishu Yingyong, 2018
Although the uniform theory of diffraction(UTD) could be theoretically applied to arbitrarily-shaped convex objects modeled by non-uniform rational b-splines(NURBS), one of the great challenges in calculation of the UTD surface diffracted fields is the ...
Cao Tuo, Fu Song, He Siyuan
doaj   +1 more source

Nitsche’s method for two and three dimensional NURBS patch coupling [PDF]

open access: yes, 2013
We present a Nitche’s method to couple non-conforming two and three-dimensional NURBS (Non Uniform Rational B-splines) patches in the context of isogeometric analysis (IGA). We present results for linear elastostatics in two and and three-dimensions. The
Bonisoli, E   +4 more
core   +3 more sources

Discontinuous Galerkin approximations in computational mechanics: hybridization, exact geometry and degree adaptivity [PDF]

open access: yes, 2019
Discontinuous Galerkin (DG) discretizations with exact representation of the geometry and local polynomial degree adaptivity are revisited. Hybridization techniques are employed to reduce the computational cost of DG approximations and devise the ...
Giacomini, Matteo   +1 more
core   +2 more sources

Simulation of Seismic Response of Reinforced Concrete Beam-Column Joints with Nurbs Surface Fitting

open access: yesArchives of Civil Engineering, 2017
This paper presents an approach based on NURBS (non-uniform rational B-splines) to achieve a seismic response surface (SRS) from a group of points obtained by using an analytical model of RC joints.
Mirhosseini R. Tabatabaei
doaj   +1 more source

3D hybrid wound devices for spatiotemporally controlled release kinetics [PDF]

open access: yes, 2012
This paper presents localized and temporal control of releasekinetics over 3-dimensional (3D) hybridwounddevices to improve wound-healing process. Imaging study is performed to extract wound bed geometry in 3D.
Koc, Bahattin   +3 more
core   +1 more source

Analysis of cross-ply laminated plates using isogeometric analysis and unified formulation

open access: yesCurved and Layered Structures, 2014
In this paper, we study the static bending and free vibration of cross-ply laminated composite plates using sinusoidal deformation theory. The plate kinematics is based on the recently proposed Carrera Unified Formulation (CUF), and the field variables ...
Natarajan S.   +2 more
doaj   +1 more source

L’epoca delle splines: geometrie e linee del progetto contemporaneo

open access: yesDisegnare con, 2012
L’iconografia dell’architettura e del design di ogni epoca si caratterizza per l’uso di linee e di forme geometriche che vengono rese realizzabili dall’evoluzione dei materiali e delle tecniche costruttive, nonché dall’introduzione di particolari ...
Enrico Cicalò   +3 more
doaj   +1 more source

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