Article | REF: AM3729 V2

Discontinuous Fiber Orientation in Thermoplastic Processing

Authors: Julien FÉREC, Gilles AUSIAS

Publication date: August 10, 2025 | Lire en français

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2. Fiber orientation patterns – ly diluted suspensions

After seeing how to describe an orientation state for fiber populations, it is essential to predict its evolution during a flow generated by a forming process. The various existing orientation models are all derived from Jeffery's equation, which governs the movement of an isolated fiber.

2.1 Jeffery equation

In 1922, Jeffery derives a solution for the flow of a Newtonian fluid around a rigid particle that is...

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Fiber orientation patterns – ly diluted suspensions

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Bibliography

(1) - ADVANI (S.G.), TUCKER (C.L.) - The use of tensors to describe and predict fiber orientation in short fiber composites. - In : Journal of Rheology, 31.8, p. 751-784. DOI : 10.1122/1.549945 (1987).
(2) - ALTAN (M.C.) et al - Numerical prediction of...

Patents

TUCKER, III CHARLES L.; WANG JIN; O'GARA JOHN F. – Method and article of manufacture for determining a rate of change of orientation of a plurality of fibers disposed in a fluid, US7266469B1·, September 4, 2007.

TSENG HUAN CHANG; CHANG RONG YEU; HSU CHIA HSIANG – Method and computer readable media for determining orientation of fibers in a fluid, US2012330627A1·2012-12-27.

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