Analysis of Circular Braiding Process, Part 2: Mechanics Analysis of the Circular Braiding Process and Experiment

[+] Author and Article Information
Q. Zhang

Black and Decker Reliability Center, Towson, Maryland 21286

D. Beale

Department of Mechanical Engineering, Auburn University, Alabama 36849-5341

R. M. Broughton, S. Adanur

Department of Textile Engineering, 115 Textile Engineering Building, Auburn University, Alabama 36849-5341

J. Manuf. Sci. Eng 121(3), 351-359 (Aug 01, 1999) (9 pages) doi:10.1115/1.2832688 History: Received October 01, 1997; Revised July 01, 1998; Online January 17, 2008


The final structure of a braid is a consequence of force interactions among yarns in the convergent zone. In Part 1, the influence of friction forces on the final braided structure was discussed via kinematic analysis. A transformation from a 3-D cone to a 2-D plane was made for the mechanics analysis. A mechanics model is proposed in this paper to determine the braid angle by considering interlacing forces. Equilibrium equations for the braiding process are deduced. A Newton-Raphson method is used to solve the nonlinear algebraic equation set. Experiments have been conducted to produce braids at different machine speeds and with different tensions, and reveal that the mechanics model is potentially a better predictor of final braid structure than the kinematic analysis.

Copyright © 1999 by The American Society of Mechanical Engineers
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