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

Chen, S. and Harper, L.T. and Endruweit, A. and Warrior, N.A. (2015) Formability optimisation of fabric preforms by controlling material draw-in through in-plane constraints. Composites Part A: Applied Science and Manufacturing, 76 . pp. 10-19. ISSN 1359-835X

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Abstract

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 double-dome example was successfully reduced from 48.2 degrees to 37.2 degrees following a two-stage optimisation process.

Item Type: Article
Keywords: Fabrics/textiles, Finite element analysis (FEA), Forming
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Mechanical, Materials and Manufacturing Engineering
Identification Number: 10.1016/j.compositesa.2015.05.006
Depositing User: Harper, Lee
Date Deposited: 03 Aug 2017 10:47
Last Modified: 12 Oct 2017 23:12
URI: http://eprints.nottingham.ac.uk/id/eprint/44627

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