Results 11 to 20 of about 5,412 (286)

Research on logarithmic spiral roll profile in hot rolling

open access: yesMetalurgija, 2022
Presented is a new logarithmic spiral roll profile for 2-high hot rolling,and successfully establishing the logarithmic spiral roll profile equation.The inherent benefits over traditional sine curve roll profile include control of rolling force and ...
F. B. Lian   +6 more
doaj   +1 more source

Design and Investigation of an Asymmetric Logarithmic Spiral Gear Drive

open access: yesApplied Bionics and Biomechanics, 2022
Sliding on gear teeth working surfaces has negative effects on the performances of gears, such as tooth surface wear, pitting, etc. In order to reduce the gear sliding during high speed and heavy load, a new type of pure rolling gear, named as an ...
Zenghuang He   +4 more
doaj   +2 more sources

Logarithmic spirals and continue triangles [PDF]

open access: yesJournal of Computational and Applied Mathematics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
ANATRIELLO, GIUSEPPINA   +1 more
openaire   +5 more sources

Study on the Motion Law of Logarithmic Spiral Type Cam Mechanism

open access: yesJixie chuandong, 2015
The solid models of the logarithmic spiral cam mechanism and common cam mechanism are established by using SolidWorks,and the kinematics simulation is carried out.Then,by using the software of ANSYS / LS-DYNA,the dynamics analysis of the two kinds of cam
Yin Libin   +4 more
doaj   +2 more sources

The logarithmic spiral, autoisoptic curve

open access: yes, 2010
In the Line of Investigation that in the department of “Technical Drawing” in the School of Agriculture Engineering of Madrid, we carry out on the study of The Technical Curves and his singularities, we demonstrate an interesting property of the Logarithmic Spiral.
Puerta Romero, Francisco   +4 more
openaire   +3 more sources

Spiral Lambert's problem with generalized logarithmic spirals

open access: yes, 2016
Lambert?s problem subject to a continuous acceleration is solved using the family of generalized logarithmic spirals. Thanks to the existence of two first integrals related to the energy and angular momentum surprising analogies with the Keplerian case are found. A minimum-energy spiral transfer exists.
Roa Vicens, Javier   +1 more
openaire   +2 more sources

The logarithmic spiral: a counterexample to the K = 2 conjecture

open access: yesAnnals of Mathematics, 2005
Let \(\Omega\) be an open simply connected subset of the complex plane \({\mathbb C}\) with \(\Omega\not={\mathbb C}\), let \(X=S^2\setminus \Omega\) be the complement of \(\Omega\) in the Riemann sphere \(S^2\) and let \({\mathcal {CH}}(X)\) be the hyperbolic convex hull of \(X\) in hyperbolic 3-space \({\mathbb H}^3\).
Epstein, D. B. A., Markovic, V.
openaire   +3 more sources

Special Curves in Engineering. Surfaces Generated by the Logarithmic Spiral

open access: yesModelling in Civil Environmental Engineering, 2022
The logarithmic spiral is one of the most known curves with applications in engineering. We consider product of the logarithmic spiral with a real line and tensor product of two logarithmic spirals and investigate their minimality or flatness.
Broscăţeanu Ștefan Cezar
doaj   +1 more source

On the plausible origins of the spiral character of galaxies

open access: yesOpen Astronomy, 2021
We here-in demonstrate that the proposed hitherto unknown gravitomagnetic dark-force that hypothetically explains the Flat Rotation Curves of Spiral Galaxies — this same force, explains very well, the logarithmic and as-well, the barred spiral shapes of ...
Nyambuya Golden Gadzirayi
doaj   +1 more source

Logarithmically spiraling helicoids [PDF]

open access: yesCommunications in Analysis and Geometry, 2018
26 pages, 1 ...
Breiner, Christine, Kleene, Stephen J.
openaire   +2 more sources

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