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A Discrete Probalistic Model of Forces in a Visco-elastic Thread Pulled Through a Drawing Zone

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Abstract:

A simulation was carried out of forces acting in a thread of random variable visco-elastic rheological properties, which is displaced through a model drawing zone. This zone consists of two pairs of rollers working at different tangential velocities. The computer simulations carried out indicated a significant influence of irregularities in the thread’s visco-elastic properties on the stochastic character of the thread tensions. The latter decrease with an increase in the length of the drawing zone, and rise with the velocity of thread displacement. The model described in this article is a development of the model based only on the elasticity theory elaborated previously by the autors, and also described in Fibres & Textiles in Eastern Europe.

Tags: visco-elastic thread, random irregularities, tensions, probalistic model, drawing zone.

Published in issue no 1 (66) / 2008, pages 44–49.

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