Practicability of metallic hybrid systems in enhancing the energy absorption capacity: expansion and buckling mechanisms

Paygozar B., Sadigh M. A. S.

JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING, cilt.42, sa.6, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 42 Sayı: 6
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1007/s40430-020-02405-3
  • Dergi Adı: JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Hybrid system, Absorbed energy, Crashworthiness parameters, System efficiency, CIRCULAR TUBES, RIGID TUBES, ABSORBERS, ALUMINUM, BEHAVIOR, IMPACT
  • TED Üniversitesi Adresli: Evet

Özet

In this paper, the efficiency of a new hybrid design of energy absorber systems is investigated to improve the capability of the system in absorbing the kinetic energy of vehicles in case of a crash. This setup implements two well-known energy absorption mechanisms simultaneously to enhance the energy dissipation capacity of the system while occupying a limited constant space. The system consists of two individual mechanisms, expansion of a circular tube accompanied by buckling of two inner tubes, which dissipates the energy through friction and plastic deformations. This study comprises several case studies surveyed under identical loading conditions. Experimental results are utilized to validate finite element simulations thereby analyzing several case studies so as to achieve the maximum efficiency of the system via geometrical optimizations. This study shows promising outcomes about the improvement in the system capacity in energy absorption while utilizing hybrid systems.