Investigation of performances of energy absorbing profiles having different geometries under oblique loads

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ALTIN M.

JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.34, sa.3, ss.1518-1525, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 34 Sayı: 3
  • Basım Tarihi: 2019
  • Doi Numarası: 10.17341/gazimmfd.460549
  • Dergi Adı: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.1518-1525
  • Anahtar Kelimeler: Energy absorbing profile, angular deformasyon, Ls-Dyna, Crush force efficiency, specific energy absorption, MULTIOBJECTIVE CRASHWORTHINESS OPTIMIZATION, THIN-WALL STRUCTURES, ABSORPTION CHARACTERISTICS, CRUSHING ANALYSIS, MULTICELL SQUARE, CIRCULAR TUBES, SIMULATION, STEEL, CAPACITY, COLUMNS
  • Gazi Üniversitesi Adresli: Evet

Özet

Energy absorbing profiles, which are placed on bumpers of automobiles, are fasteners that are capable to absorb the kinetic energy released during front and rear crashed accidents. In case of an accident, insufficient absorption of impact forces acting on energy absorber profiles will cause transmission of these impact forces to passenger compartment in vehicle. In the scope of the study, ten energy absorber with square and circular cross sectional having different geometrical specifications were designed and energy absorption performances of these absorbers were investigated with finite elements method under different load angles. Energy absorber profiles were deformed for 120 mm with a rigid plate having angles of 0 degrees, 15 degrees and 30 degrees. The specific energy absorption and crash force efficiencies of each energy absorber were examined. As a result of the analyses, it was determined that the circular cross sectional energy absorbers have higher performance for each cases.