Frequency optimization of laminated folded composite plates

TOPAL U., Uzman U.

MATERIALS & DESIGN, cilt.30, sa.3, ss.494-501, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30 Sayı: 3
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.matdes.2008.05.066
  • Dergi Adı: MATERIALS & DESIGN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.494-501
  • Anahtar Kelimeler: Laminates, Mechanical, ELEMENT VIBRATION ANALYSIS
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this study, frequency optimization of symmetrically laminated folded composite plates is presented. The folded plates are modelled as a composite structure that consists of flat plates. The fundamental frequencies of one- and two-fold folded plates are maximized with respect to fibre orientations. The first-order shear deformation theory (FSDT) is used for vibration analysis of laminated folded plates. The modified feasible direction (MFD) method is used for the optimization routine. Therefore a program based on FORTRAN is used. Finally, the significant effects of length-to-thickness ratios, crank angles, different plate lengths and boundary conditions on the optimum results are demonstrated. (C) 2008 Elsevier Ltd. All rights reserved.