A design algorithm to model fibre paths for manufacturing of structurally optimised composite laminates
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TLDR
This work develops a design for manufacturing (DFM) tool for the introduction in design of the manufacturing requirements and limitations derived from the fibre placement technology, which enables the automatic generation of continuous fibre paths for manufacturing.About:
This article is published in Composite Structures.The article was published on 2018-11-15 and is currently open access. It has received 14 citations till now. The article focuses on the topics: Design for manufacturability & Composite laminates.read more
Figures
Figure 9. Flat square plate with a hole: reference paths optimised for structures and paths optimised for manufacturing with gap and overlap analysis for each ply (green: gap and blue: overlap) 
Figure 2. Curve smoothing approach to comply with minimum turning radius constraint 
Table 2. Analysis of results of ply 4 of flat square plate with a hole showing angle deviations, gaps and overlaps, and tow-drops that would be needed to remove the overlaps 
Table 3. Analysis of results for the design of reference (Ref) and manufacturing (Mfg) fibre paths of windshield front fairing Case study Windshield front fairing Ply orientation (deg) 0 45 90 Description Ref. 
Figure 1. Approach for fibre path modelling for manufacturing, including for each step (boxes): input and output variables (left and right side of boxes), conditions and constraints applicable (in bold at top side of boxes), and enablers and algorithms used (in italic at bottom side of boxes). 
Figure 3. (a) Case study used and representation of modelled curves; (b) graph of the effect of refinement of interpolation on computation time; (c) graph of the effect of refinement on average angle deviation
Citations
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Journal ArticleDOI
3D printing of optimized composites with variable fiber volume fraction and stiffness using continuous fiber
Kentaro Sugiyama,Ryosuke Matsuzaki,Andrei V. Malakhov,Alexander N. Polilov,Masahito Ueda,Akira Todoroki,Yoshiyasu Hirano +6 more
TL;DR: In this article, the authors optimized the curved fiber trajectories to realize variable fiber volume fraction and stiffness composites (VVfSC) using a continuous fiber composite 3D printer.
Journal ArticleDOI
Manufacturing-Induced Imperfections in Composite Parts Manufactured via Automated Fiber Placement
Falk Heinecke,Christian Willberg +1 more
TL;DR: The state of the art in modelling gaps and overlaps and assessing their influence on mechanical properties is presented and the research gaps and remaining issues are identified.
Journal ArticleDOI
An efficient semi-analytical framework to tailor snap-through loads in bistable variable stiffness laminates
TL;DR: In this paper, a semi-analytical model was proposed to compute the snap-through forces of bistable variable stiffness (VS) laminates with curvilinear fiber paths.
Journal ArticleDOI
Manufacturable insight into modelling and design considerations in fibre-steered composite laminates: state of the art and perspective
TL;DR: In this article, the authors summarize and discuss underlying fiber placement technologies including tailored fiber placement (TFP), continuous tow shearing (CTS), and automated fibre placement (AFP), followed by a detailed discussion on the manufacturing limitations and constraints of the AFP process.
Journal ArticleDOI
Optimization of variable stiffness laminates with gap-overlap and curvature constraints
TL;DR: In this paper, the gap-overlap and curvature constraints on fiber tows are considered in the design optimization of variable stiffness laminates, and the problem of compliance minimization with manufacturability constraints is solved with the MMA optimization algorithm.
References
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Journal ArticleDOI
Effect of tow-drop gaps on the damage resistance and tolerance of Variable-Stiffness Panels
TL;DR: In this article, the effects of tow-drop gaps in Variable Stiffness Panels under drop-weight impact events were investigated and it was shown that the strength reduction is driven mainly by the damage caused by the impact event rather than by the influence of manufacturing-induced defects.
Design and Manufacture of a Variable-Stiffness Cylindrical Shell
TL;DR: A cylindrical shell with circumferentially varying stiffness optimized for maximum bending load carrying capability was built at the Boeing Company using an Ingersoll fiber-placement machine as discussed by the authors.
Tailored fibre placement optimization tool
TL;DR: This paper deals with selected results of 4 research projects in the field of TFP the Institute of Composite Structures and Adaptive Systems of DLR is working in, within the first already finished project the tool TACO (Tailored Composite Design Code) was developed.
Proceedings ArticleDOI
On further developments of feasible region of lamination parameters for symmetric composite laminates
TL;DR: In this article, feasibility constraints are derived for a symmetric laminate which are functions of four in-plane and four out-of-plane lamination parameters, which are then used in the design of symmetric variable angle tow laminate for maximising shear buckling performance.
Journal ArticleDOI
Fibre steering for a composite C-beam
TL;DR: Fibre steering of composite tows within lamina is investigated as a means of producing composite components with increased strength or stiffness when compared to the commonly adopted unidirectional and fabric laminates used in industry as discussed by the authors.