• Corpus ID: 238531372

"Twist-Controlled"force amplification \&Spinning tension transition in yarn

  title={"Twist-Controlled"force amplification \\&Spinning tension transition in yarn},
  author={Antoine Seguin and J{\'e}r{\^o}me J. Crassous},
Combining experiments and numerical simulations with a mechanical/statistical model of twisted yarns, we discuss the spinning transition between a cohesion-less assembly of fibers into a yarn. We show that this transition is continuous but very sharp due to a giant amplification of frictional forces which scales as exp θ, where θ is the twist angle. We demonstrate that this transition is controlled solely by a non-dimensional number H involving twist, friction coefficient, and geometric lengths… 

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