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
A parametric level set method for the optimization of composite structures with curvilinear fibers
TL;DR: In this article, a parametric level set method for the optimization of composite structures with curvilinear fibers is presented, where the level set function is constructed by a set of radial basis functions with compact support.
Journal ArticleDOI
Shape and topology optimization method for fiber placement design of CFRP plate and shell structures
TL;DR: In this article , a non-parametric shape-topology optimization method for fiber placement and orientation design is presented, aiming at controlling the stiffness of CFRP (Carbon Fiber Reinforced Plastics) shell structures.
Dissertation
Parametric, reduced and multiscale model for the interactive optimization of laminated composite structures
TL;DR: A new numerical procedure is proposed to allow engineers to handle each design parameter of a laminated composite structure, each at its relevant scale, and to qualify the Parametric and Reduced Behavior Model and its models.
Optimising the ply dropping order in variabel stiffness, variable thickness laminates using stacking sequence tables
TL;DR: In this paper, a multi-step algorithm is developed combining the optimisation of all aspects of variable sti ness laminates at a relatively modest computational cost, including the ply drop order.
Journal ArticleDOI
Algorithms for Constructing Initial and Offset Path of Automated Fiber Placement for Complex Double-Curved Surfaces
TL;DR: In this article, the authors proposed a novel method for generating an initial path that is proportionally adjustable between the fixed-angle and the geodesic direction to satisfy the fiber directional deviation and wrinkling deformation constraints.
References
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Book
Differential geometry of curves and surfaces
TL;DR: This paper presents a meta-geometry of Surfaces: Isometrics Conformal Maps, which describes how the model derived from the Gauss Map changed over time to reflect the role of curvature in the model construction.
Journal ArticleDOI
A Class of Globally Convergent Optimization Methods Based on Conservative Convex Separable Approximations
TL;DR: This paper deals with a certain class of optimization methods, based on conservative convex separable approximations (CCSA), for solving inequality-constrained nonlinear programming problems, and it is proved that the sequence of iteration points converges toward the set of Karush--Kuhn--Tucker points.
Journal ArticleDOI
The engineering aspects of automated prepreg layup: History, present and future
TL;DR: Automated Tape Laying (ATL) and Automated Fibre Placement (AFP) are the two main technologies used to automate the layup of prepreg as mentioned in this paper, with an emphasis on past issues in application and capability as well as their solution.
Journal ArticleDOI
In-plane response of laminates with spatially varying fiber orientations - Variable stiffness concept
Zafer Gürdal,Reynaldo Olmedo +1 more
TL;DR: In this paper, a solution to the plane elasticity problem for a symmetrically laminated composite panel with spatially varying fiber orientations has been obtained, and the effects of the variable fiber orientation on the displacement fields, stress resultants and global stiffness are analyzed.
Journal ArticleDOI
Optimum stacking sequence design of composite materials Part II: Variable stiffness design
TL;DR: In this paper, a composite laminate may be designed as a permutation of several straight-fiber layers or as a matrix embracing fibers positioned in curvilinear paths.