Results 11 to 20 of about 1,192 (183)
Polar NURBS Surface with Curvature Continuity [PDF]
Computer Graphics Forum, 2013 AbstractPolar NURBS surface is a kind of periodic NURBS surface, one boundary of which shrinks to a degenerate polar point. The specific topology of its control‐point mesh offers the ability to represent a cap‐like surface, which is common in geometric modeling.
Shi, Kan-Le +4 more
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An Improvement on the Upper Bounds of the Partial Derivatives of NURBS Surfaces
Mathematics, 2020 The Non-Uniform Rational B-spline (NURBS) surface not only has the characteristics of the rational Bézier surface, but also has changeable knot vectors and weights, which can express the quadric surface accurately.
Ye Tian +4 more
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NURBS-Based Parametric Design for Ship Hull Form
Journal of Marine Science and Engineering, 2022 Recently, the NURBS technique has been widely used in the 3D design software for ships. However, in most research, the NURBS technique is only applied to the mathematical representation of hull curves and surfaces, and the parametric deformation of hull ...
Hui Zhou +4 more
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Equiareal parameterizations of NURBS surfaces
Graphical Models, 2014 The equiareality of NURBS surfaces greatly affects the results of visualization and tessellation applications, especially when dealing with extruding and intruding shapes. To improve the equiareality of given NURBS surfaces, an optimization algorithm using the Mobius transformations is presented in this paper.
Yi-Jun Yang +2 more
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Five-Axis Tool Path Generation of Injection Mold Represented by T-Spline Surface
Advances in Polymer Technology, 2020 Injection molding is widely used in industries to produce polymeric products. At present, compound NURBS surfaces are commonly used to represent freeform surfaces in mold models.
Ce Shang +5 more
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T-Spline Surface Toolpath Generation Using Watershed-Based Feature Recognition
Applied Sciences, 2020 The freeform surface is treated as a single machining region for most traditional toolpath generation algorithms. However, due to the complexity of a freeform surface, it is impossible to produce a high-quality surface using one unique machining process.
Yazui Liu, Gang Zhao, Pengfei Han
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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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Inverse Kinematics-Based Trajectory Generation For Robot-Assisted 3D Surface Machining [PDF]
Engineering and Technology Journal, 2010 Machining and tracking of 3D surfaces using industrial robot is not a newmethod, but the new in this paper is the use of simple trigonometric relations inthe calculations of robots joints variables by using the inverse kinematicsapproach rather than the ...
Wissam K. Hamdan Sarraji
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NURBS-Python: An open-source object-oriented NURBS modeling framework in Python
SoftwareX, 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
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The multivariate quartic NURBS surfaces
Journal of Computational and Applied Mathematics, 2004 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Li, Chong-Jun, Wang, Ren-Hong
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