A teaching learning based optimization for truss structures with frequency constraints

DEDE T., TOĞAN V.

STRUCTURAL ENGINEERING AND MECHANICS, cilt.53, sa.4, ss.833-845, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 53 Sayı: 4
  • Basım Tarihi: 2015
  • Doi Numarası: 10.12989/sem.2015.53.4.833
  • Dergi Adı: STRUCTURAL ENGINEERING AND MECHANICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.833-845
  • Anahtar Kelimeler: teaching learning based optimization, frequency constraints, shape and size optimization, trusses, DESIGN OPTIMIZATION, GENETIC ALGORITHM
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

Natural frequencies of the structural systems should be far away from the excitation frequency in order to avoid or reduce the destructive effects of dynamic loads on structures. To accomplish this goal, a structural optimization on size and shape has been performed considering frequency constraints. Such an optimization problem has highly nonlinear property. Thus, the quality of the solution is not independent of the optimization technique to be applied. This study presents the performance evaluation of the recently proposed meta-heuristic algorithm called Teaching Learning Based Optimization (TLBO) as an optimization engine in the weight optimization of the truss structures under frequency constraints. Some examples regarding the optimization of trusses on shape and size with frequency constraints are solved. Also, the results obtained are tabulated for comparison. The results demonstrated that the performance of the TLBO is satisfactory. Additionally, TLBO is better than other methods in some cases.