Lightweight design of variable-angle filament-wound cylinders combining Kriging-based metamodels with particle swarm optimization
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2022-05
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Language
en
Pages
23
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STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, Volume 65, issue 5
Abstract
Variable-angle filament-wound (VAFW) cylinders are herein optimized for minimum mass under manufacturing constraints, and for various design loads. A design parameterization based on a second-order polynomial variation of the tow winding angle along the axial direction of the cylinders is utilized to explore the nonlinear steering-thickness dependency in VAFW structures, whereby the thickness becomes a function of the filament steering angle. Particle swarm optimization coupled with three Kriging-based metamodels is used to find the optimum designs. A single-curvature Bogner–Fox–Schmit–Castro finite element is formulated to accurately and efficiently represent the variable stiffness properties of the shells, and verifications are performed using a general purpose plate element. Alongside the main optimization studies, a vast analysis of the design space is performed using the metamodels, showing a gap in the design space for the buckling strength that is confirmed by genetic algorithm optimizations. Extreme lightweight while buckling-resistant designs are reached, along with non-conventional optimum layouts thanks to the high degree of thickness build-up tailoring.Description
Keywords
design, lightweight, mass minimization, metamodeling, variable stiffness, variable-angle, filament winding, buckling
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Citation
Wang, Z, Almeida Jr, H, Ashok, A, Wang, Z & Castro, S G P 2022, ' Lightweight design of variable-angle filament-wound cylinders combining Kriging-based metamodels with particle swarm optimization ', STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, vol. 65, no. 5, 140 . https://doi.org/10.1007/s00158-022-03227-8