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VOL. 17 | 2016 Some Results on Frenet Ruled Surfaces Along the Evolute-Involute Curves, Based on Normal Vector Fields in E$^{3}$

Abstract

In this paper we consider eight special Frenet ruled surfaces along to the involute-evolute curves, $\alpha^{\ast}$ and $\alpha $ respectively$,$ with curvature $k_{1}\neq 0$. First we find the excplicit equation of Frenet ruled surfaces along the involute curves in terms of the Frenet apparatus of evolute curve $\alpha$. Also normal vector fields of these Frenet ruled surfaces have been calculated too.

Further we give all results for sixteen positions of Normal vector fields of four Frenet ruled surfaces in terms of Frenet apparatus of evolute curve $\alpha$. These results also give us the positions of eight special Frenet ruled surfaces along to the involute-evolute curves, based on their normal vectors, in terms of curvatures of evolute curve $\alpha$. We can give the answer of the questions that in which condition we can produce orthogonal surfaces or surfaces with constant angle. For example Darboux ruled surface and involutive tangent ruled surface of an evolute $\alpha$ have the perpendicular normal vector fields.

Information

Published: 1 January 2016
First available in Project Euclid: 15 December 2015

zbMATH: 1345.53004
MathSciNet: MR3445437

Digital Object Identifier: 10.7546/giq-17-2016-296-308

Rights: Copyright © 2016 Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences

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