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An Integrated Approach to Dynamic Analysis of the Ring Spinning ProcessPart IV: Inherent Instability of the Free BalloonCollege of Textiles, North Carolina State University, Raleigh, North Carolina 27695, U.S.A.
College of Textiles, North Carolina State University, Raleigh, North Carolina 27695, U.S.A.
College of Textiles, North Carolina State University, Raleigh, North Carolina 27695, U.S.A.
USDA, ARS, Southern Regional Research Center, New Orleans, Louisiana 70179, U.S.A.
School of Mathematics and Statistics, The University of Sydney, NSW, Australia This paper will show that the theory of ring spinning developed by Batra et al. and subsequently by Fraser can be used to explain recent experimental results obtained at the SRRC. In particular, Fraser showed that the quasi-stationary, nonlinear equations of motion relevant to ring spinning, including the effect of centripetal acceleration and air drag force, developed earlier by several investigators exhibit a bifurcation phe nomenon typical of many other nonlinear systems in mathematical physics. This investigation shows that the bifurcation analysis applied in a way that simulates for mation of the bobbin, even a chase of the bobbin, reveals meta-stability in parametric space, which can be used to explain the instabilities in free (no control rings) balloon profiles observed experimentally.
Textile Research Journal, Vol. 65, No. 7,
417-423 (1995) |
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