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Geometric modelling of industrial preforms: Woven and braided textiles

1999; SAGE Publishing; Volume: 213; Issue: 2 Linguagem: Inglês

10.1177/146442079921300201

2041-3076

F. Robitaille, B. R. Clayton, A.C. Long, B. J. Souter, C.D. Rudd,

Mechanical Behavior of Composites

Predictive calculations of the physical properties of fibrous preforms and composite parts require an appropriate description of the preform geometry. Most internal dimensions of a preform are set during its manufacturing through mechanical interactions occurring between the tows and threads. However, the global shape and the interlacing patterns of the constituent textiles are determined independently. In this paper, a formal procedure for the description of the interlacing patterns is proposed. This procedure, which is based on the individual textile manufacturing processes, is general in the textiles considered and in the possible applications. The interlacing patterns are expressed by a series of vectors that follow a universal set of criteria and are generated from the values taken by the processing parameters. Defining examples are given for three-dimensional woven textiles and three-dimensional tubular braided textiles, and geometrical applications are also presented. Further examples for warp-knitted textiles and multiple-layer stacks will be given in a subsequent paper, together with examples of physical applications.