Title: On the Development of a Computational Design Methodology for Tailored Fiber Placement Preforms
Authors: Daniel Rapking, Eric Zhou, Bert Liu, Michael Braginsky, Gyaneshwar Tandon and Scott Huelskamp
Abstract: The promise of the automated forming process known as tailored fiber placement (TFP) is that it can produce composite preforms by systematically placing fiber in such a way as to optimize the part’s performance while greatly reducing weight with the additional benefit of improved out-of-plane performance due TO localized stitching. This promise is hugely dependent on the designers’ ability to develop the fiber placement and stitching designs for optimal mechanical performance, and current methodologies for such designs rely mostly on trial-and-error. Our group aims to develop a computational design methodology that will optimize mechanical performance in order to reduce part development time and costs. This paper focuses on the methodology for modelling of the inter-ply interface as part of this effort. Two approaches – a total homogenization of the interface region or separate modeling of the effective regions of each stitch at the interface between plies – are compared with double cantilever beam (DCB) tests in order to develop manufacturing guidelines regarding desired stitch densities required to improve performance.
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Conference: SAMPE 2020 | Virtual Series
Publication Date: 2020/06/01
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