Lightweight design of variable-angle filament-wound cylinders combining Kriging-based metamodels with particle swarm optimization

Zhihua Wang, José Humberto S. Almeida, Aravind Ashok, Zhonglai Wang, Saullo G.P. Castro*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
20 Downloads (Pure)

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.

Original languageEnglish
Article number140
Number of pages23
JournalStructural and Multidisciplinary Optimization
Volume65
Issue number5
DOIs
Publication statusPublished - 2022

Keywords

  • Buckling
  • Design
  • Filament winding
  • Lightweight
  • Mass minimization
  • Metamodeling
  • Variable stiffness
  • Variable-angle

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