Results 101 to 110 of about 23,352,272 (162)

Fitting Surface of Free Form Objects using Optimized NURBS Patches Network with Evolutionary Strategies (µ + λ) − ES

open access: yes, 2008
We propose an algorithm to produce a 3-D CAD model from a set of range data, based on non-uniform rational B-splines (NURBS) surface fitting technique. Our goal is to construct continuous geometric models, assuming that the topology of surface is unknown.
John William Branch   +3 more
core  

An Integrated Framework for Automated Image Segmentation and Personalized Wall Stress Estimation of Abdominal Aortic Aneurysms. [PDF]

open access: yesBioengineering (Basel)
Roby M   +6 more
europepmc   +1 more source

Contents

open access: yes, 2008
This report describes the XCSurf package. This is a program for modelling free form 3D curves, tensor product surfaces and hierarchical tensor product surfaces, which is only based on NURBS (Non Uniform Rational B-Splines) and trimmed NURBS mathematics ...
What Is Xcsurf, G. Casciola
core  

Frictionless contact of elastic bodies: comparison of treatment in finite element analysi and isogeometric analysis

open access: yes, 2012
Artificial oscillations in contact force due to non-smooth contact surface are treated by isogeometric analysis (IGA). After brief overview of B-splines and Non-Uniform Rational B-Splines (NURBS) representation, the mortar-based contact algorithm is ...
Kopačka, Ján
core  

Trajectory Planning of Manipulators Based on Artificial Immune-improved Particle Swarm Optimization Algorithm

open access: yesJixie chuandong
The trajectory of the welding robot is complex and the control accuracy is high. A trajectory planning method is proposed to meet the multi-objective constraints. Aiming at the requirement of robot trajectory smoothness, the Cartesian space waypoints are
Guo Xin, Li Lijun
doaj  

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