Numerical investigation of energy absorption behaviors of variable thickness tubes

MERİÇ D., GEDİKLİ H.

JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.35, sa.4, ss.1939-1956, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 4
  • Basım Tarihi: 2020
  • Doi Numarası: 10.17341/gazimmfd.652878
  • Dergi Adı: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Art Source, Compendex, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.1939-1956
  • Anahtar Kelimeler: Variable thickness tubes, finite element method, multi-objective optimization, energy absorption, AXIAL CRUSHING BEHAVIOR, THIN-WALLED STRUCTURES, MULTIOBJECTIVE OPTIMIZATION, CRASHWORTHINESS DESIGN, GRADED THICKNESS, STAINLESS-STEEL, ALUMINUM TUBES, SQUARE TUBES, PERFORMANCES, PARAMETERS
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this study; the energy absorption behaviors of variable thickness tube (VTT) made of aluminum alloy AA6063 which has different thickness (0.5 mm - 4 mm) layers in axial direction and different taper angles (0 degrees, 5 degrees and 10 degrees) were numerically investigated. As a result of analysis deformations pattern, force-displacement and energy-time graphs of the tubes were obtained. Optimum layer thicknesses which provide the lowest peak force and the highest specific energy absorbing (SEA) values for different taper angles, were determined by the optimization method which includes Feedforward Artificial Neural Networks (FNN) technique. The layer thicknesses obtained as a result of optimization showed that the energy absorption behavior of the VTT was improved.