Maximization of buckling load of laminated composite plates with central circular holes using MFD method

TOPAL U., Uzman U.

STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, vol.35, no.2, pp.131-139, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 35 Issue: 2
  • Publication Date: 2008
  • Doi Number: 10.1007/s00158-007-0119-1
  • Journal Name: STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.131-139
  • Keywords: laminated composite plates, FSDT, circular holes, buckling loads, optimal designs, CUTOUTS, DESIGN, PANELS, SHEAR
  • Karadeniz Technical University Affiliated: Yes

Abstract

This paper addresses optimal design of simply supported symmetrically laminated composite plates with central circular holes. The design objective is the maximization of the buckling load, and the design variable is considered as the fiber orientation. The first-order shear deformation theory is used for the finite element analysis. The study is complicated because the effects of bending-twisting coupling are also included for the buckling optimization. The modified feasible direction method is used to solve the optimization problems. Finally, the effect of different number of layers, boundary conditions, width-to-thickness ratio, plate aspect ratios, hole daimeter-to-width ratio, and load ratios on the results is investigated.