Results 11 to 20 of about 118,109 (263)

Computing method for induced curvature parameters based on normal vector of instantaneous contact line and its application to Hindley worm pair

open access: yesAdvances in Mechanical Engineering, 2017
The main objective of this article is to propose a practical methodology to compute the induced curvature parameters for a line-conjugated tooth surface couple based on the normal vector of its instantaneous contact line.
Yaping Zhao, Yimin Zhang
doaj   +2 more sources

A Survey of Magnetic Field Line Curvature in Jovian Dawn Magnetodisc

open access: yesGeophysical Research Letters
The Jovian magnetosphere is highly dynamic, influenced by both solar wind and internal processes associated with the rapid planetary rotation and Io's volcanic activities.
W. D. Gu   +8 more
doaj   +2 more sources

A unified method for constructing developable surface pencils interpolating characteristic curves

open access: yesFrontiers in Physics, 2022
Developable surface is a simple and common surface in surface modeling. Geodesic, line of curvature, asymptotic curve, and D-type curve are important characteristic curves on the surfaces.
Jun Wang, Miaochao Chen, Dongyin Wang
doaj   +1 more source

Lines of Curvature on the Double Torus

open access: yesLobachevskii Journal of Mathematics, 2022
21 pages, 4 ...
Monera, M. G.   +2 more
openaire   +2 more sources

Construction of Developable Surface with Geodesic or Line of Curvature Coordinates

open access: yesJournal of New Theory, 2021
In this paper, a developable surface with geodesic or line of curvature coordinates is constructed in the Euclidean 3-space. A developable surface is coordinated by two families of parametric curves, base curves (directrices) and lines (rulings).
Nabil Althibany
doaj   +1 more source

Research on Damage Identification of Arch Bridges Based on Deflection Influence Line Analytical Theory

open access: yesBuildings, 2023
There is no analytical solution to the deflection influence line of catenary hingeless arches nor an explicit solution to the deflection influence line difference curvature of variable section hingeless arches.
Yu Zhou   +5 more
doaj   +1 more source

SURFACES WITH PLANAR LINES OF CURVATURE [PDF]

open access: yesHonam Mathematical Journal, 2010
Let \(X\) be a plane curve in Euclidean 3-space. If a curve is fixed in the normal plane and moved along \(X\), then it generates a surface \(H\) which the authors call generalized slant cylinder. In this process the normal plane rolls on a cylinder whose base curve is the evolute of \(X\). Such a surface \(H\) is called molding surface by \textit{L. P.
Kim, Dong-Soo, Kim, Young Ho
openaire   +1 more source

The methodology of design of satellite working mechanism of positive displacement machine

open access: yesScientific Reports, 2022
In this paper is described a methodology of design of satellite mechanism consisting of two non-circular gears (externally toothed rotor and internally toothed curvature) and circular gears (satellites).
Pawel Sliwinski
doaj   +1 more source

Zero crossings on lines of curvature [PDF]

open access: yesComputer Vision, Graphics, and Image Processing, 1989
Abstract We investigate how much information can be found about the geometry of an object from an image when the general form of the reflection function is known but its specific form is not. We prove theorems showing that the zero crossings of the second directional derivatives occur near the extrema of the curvature along the principal directions ...
openaire   +2 more sources

Continuous Measurement of Three-Dimensional Root Canal Curvature Using Cone-Beam Computed and Micro-Computed Tomography: A Comparative Study

open access: yesDentistry Journal, 2020
The knowledge of root canal curvature is crucial regarding the prevention of ledge formation, root perforation and the possibility of endodontic instruments’ fracture during endodontic treatments.
Michael Kucher   +5 more
doaj   +1 more source

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