Predictive modelling for optimization of textile composite forming

Lin, Huei-Yung; Wang, J.; Long, A.C.; Clifford, M.J.; Harrison, Philip G.

doi:10.1016/j.compscitech.2007.03.040

Cited by 113 publications

(72 citation statements)

References 16 publications

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“…These numerical works must be validated, compared and complemented by experimental results. Existing experimental fabric preforming studies are limited to low severity shapes such as hemispherical [9,[14][15][16][17] spherical [18], 3D deep drawing with conical tools [19] or a double dome preforming [11,[20][21][22]. From these studies, it is not possible to deduce the behaviour evolution of a fabric when complex shape forming with small curvature radius and a triple point is considered.…”

Section: Introduction and Context Of The Studymentioning

confidence: 98%

Experimental preforming of highly double curved shapes with a case corner using an interlock reinforcement

et al. 2012

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:This experimental work concerns the study of the preforming of a specific highly double curved geometry with a triple point (case corner) by the sheet forming process using powdered interlock reinforcement (G1151 ® ). Three different punches (square box, prism, tetrahedron) were used in this study, each of them presenting highly double curved geometry with a case corner. A specific sheet forming device specially designed for the preforming of textile reinforcement was used. The expected shapes with the three punches have been obtained with an optimized blank-holder pressure. No classical defaults such as wrinkling or yarn damage are present in the useful zone of the preforms. However, a new default, not observed for spherical or hemispherical shape has been identified. It concerns the out of plane buckling of yarns. This phenomenon not observed on the square box is visible on some faces and edges of the prismatic and tetrahedron shapes. For the square box, it is easily possible to control the orientation of the yarn within the preform in the faces, whereas this is not possible for triangular faces 2 of the prismatic and tetrahedron shapes. The square box punch is therefore more adapted to preform the highly doubled curved shape with the case corner.

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Section: Introduction and Context Of The Studymentioning

confidence: 98%

Experimental preforming of highly double curved shapes with a case corner using an interlock reinforcement

et al. 2012

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“…To successfully drape a reinforcement without encountering unwanted wrinkles and defects, the main challenge is identifying optimum forming conditions. Among the processing parameters affecting fabric press forming, the distribution of the blank holder force (BHF) and the blank shape are two essential properties that should be optimised to improve the quality of the formed shape [2,3]. To optimise these parameters, efforts have been made to develop simulation tools to facilitate parametric studies.…”

Section: Formability Optimisation Of Fabric Preforms By Controlling Mmentioning

confidence: 99%

“…Nonetheless, they are likely to be used for optimising composite forming processes, since the complex relationship between wrinkling strain and clamping force does not need to be formulated. Indirect methods have previously been used to optimise fabric blank size [2] and BHF distribution [3], in order to minimise wrinkle formation. The probability for wrinkles to occur was shown to increase as the blank size is reduced relative to the size of the punch, since the tension in the blank is released during the latter stage of the forming process [2].…”

Section: Formability Optimisation Of Fabric Preforms By Controlling Mmentioning

confidence: 99%

Formability optimisation of fabric preforms by controlling material draw-in through in-plane constraints

Chen

Harper

Endruweit

et al. 2015

Composites Part A: Applied Science and Manufacturing

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A genetic algorithm is coupled with a finite element model to optimise the arrangement of constraints for a composite press-forming study. A series of springs are used to locally apply in-plane tension through clamps to the fibre preform to control material draw-in.The optimisation procedure seeks to minimise local in-plane shear angles by determining the optimum location and size of constraining clamps, and the stiffness of connected springs. Results are presented for a double-dome geometry, which are validated against data from the literature. Controlling material draw-in using in-plane constraints around the blank perimeter is an effective way of homogenising the global shear angle distribution and minimising the maximum value. The peak shear angle in the doubledome example was successfully reduced from 48.2 to 37.2 following a two-stage optimisation process.

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“…9, for two different orientations of yarns. This test have been intensively studied in the case of thin fabric reinforcements [23,49]. The simulation gives after forming the position of each yarn in the preform (Fig.…”

Section: Hemispherical Deep Drawingmentioning

confidence: 99%