| Summary: | Forming of fabric composites into complex parts such as double curvature shells leads to complex redistribution and reorientation of fibres in the composite. This study deals with the prediction of the shrinkage coefficient of fabric composite, the fibre reorientation and layer thickness variation during forming of fabric composites as well as the resulting residual stress and deformation after moulding. The shrinkage coefficient is evaluated using the classical laminate theory and the non-linear extension. The fibre reorientation is predicted using the pin-jointed net theory. The layer thickness variation is calculated according to single die moulding. A finite element model using calculated rearrangement of the laminate is generated for the residual distortion prediction of the complex part. A model for the analysis of the mechanical behaviour of fabric composite, based on the mosaic model, is presented and used in the finite element model. The prediction of the rearrangement of the laminate and the distortion were compared to experiments on rounded top cone parts. To study the influence of behaviour of the fabric structures, two different glass polyester fabric composites were used: plain weave composite and 8 harness satin."--Résumé abrégé par UMI
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