Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (11): 1669-1672.DOI: 10.12068/j.issn.1005-3026.2017.11.030

• Mathematics • Previous Articles    

Special Curves in 3-Dimensional Euclidean Space

YUAN Yuan, LI Jing, LIU Hui-li   

  1. School of Sciences, Northeastern University, Shenyang 110819, China.
  • Received:2015-06-15 Revised:2015-06-15 Online:2017-11-15 Published:2017-11-13
  • Contact: LIU Hui-li
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Abstract: The properties of center locus of osculating sphere and the rectifying circle of curves were studied by using the theory and the properties of moving frame. First, the relationships between curves and the center locus of osculating sphere of curves were studied. Based on curvature and torsion, the figure of the center locus of osculating sphere of curves was obtained. And the center locus of osculating sphere of curves was generalized helix, Bertrand curves, Mannheim curves, rectifying curve and spherical curve, respectively, when curvature and torsion satisfied certain relation. Then, based on the intersection of osculating sphere and rectifying plane, the rectifying circles were obtained, and the properties of the center locus of rectifying circles were studied.

Key words: center trace of osculating sphere, rectifying circle, curvature, torsion, rectifying curve

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