Improved chaos game optimization algorithm for optimal frequency prediction of variable stiffness curvilinear composite plate

Goodarzimehr V., TOPAL U., Vo-Duy T., Shojaee S.

JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2022
  • Doi Number: 10.1177/07316844221145642
  • Journal Name: JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Variable stiffness, laminated composite plates, improved chaos game optimization algorithm, optimum lay-up, fundamental frequency, FREE-VIBRATION ANALYSIS, NONLINEAR FREE-VIBRATION, DESIGN, FIBERS, VERSION, PANELS, MODES
  • Karadeniz Technical University Affiliated: Yes

Abstract

The optimal fundamental frequency of the variable stiffness laminated composite (VSCL) plate are predicted using an improved chaos game optimization technique (ICGO). In this analysis, the design parameters related to the fibre orientations within the layers are considered the discrete integer, i.e. the values vary between - 90 o and 90 o . The fibre orientations are changed linearly concerning the longitudinal geometry coordinate in each ply. The numerical solutions are computed by adopting a four-noded isoparametric element (five degrees of freedom per node). The proposed optimization algorithm's effectiveness, reliability and accuracy have been verified by comparing its optimum results with those of other algorithms in the literature. Also, the effect of the different relevant structural parameters, i.e. the aspect ratios, the edge conditions and the number of layers, on the optimal design, are reported in detail.