A data-driven Bayesian optimisation framework for the design and stacking sequence selection of increased notched strength laminates. (1st December 2021)

• Record Type: Journal Article
• Authors: Chuaqui, T.R.C.; Rhead, A.T.; Butler, R.; Scarth, C.
• Is Part Of: Composites. Number 226(2021)
• Publication Date: 2021-12-01
• Subjects: Strength -- Stress concentrations -- Finite element analysis (FEA) -- Damage mechanics -- Optimisation; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2021.109347
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: A novel Bayesian optimisation framework is proposed for the design of stronger stacking sequences in composite laminates. The framework is the first to incorporate high-fidelity progressive damage finite element modelling in a data-driven optimisation methodology. Gaussian process regression is used as a surrogate for the finite element model, minimising the number of computationally expensive objective function evaluations. The case of open-hole tensile strength is investigated and used as an example problem, considering typical aerospace design constraints, such as in-plane stiffness, balance of plies and laminate symmetry about the mid-plane. The framework includes a methodology that applies the design constraints without jeopardising surrogate model performance, ensuring that good feasible solutions are found. Three case studies are conducted, considering standard and non-standard angle laminates, and on-axis and misaligned loading, illustrating the benefits of the optimisation framework and its application as a general tool to efficiently establish aerospace design guidelines.