Impact behavior of triggered and non-triggered crash tubes with auxetic lattices

Fatih Usta*, Osman F. Ertaş, Altuğ Ataalp, Halit S. Türkmen, Zafer Kazancı, Fabrizio Scarpa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


In this study, impact behavior of triggered and non-triggered tubes with and without auxetic filler is examined using numerical methods. Material properties of tubes made of aluminum alloy and auxetic lattices utilizing ABSplus plastics are determined using tensile tests. Finite element analyses are performed using LS-DYNA software at 5 m/s impact velocity. Two different trigger shapes are suggested and compared each other and discussed the advantages and disadvantages over non-triggered tubes. For these loading conditions, trigger mechanism provides lower peak forces and higher crash force efficiency (CFE), but lower specific energy absorption (SEA). In addition, the effects of using auxetic fillers in these triggered tubes are investigated in terms of crashworthiness characteristics.

Original languageEnglish
Pages (from-to)119-127
Number of pages9
JournalMultiscale and Multidisciplinary Modeling, Experiments and Design
Issue number2
Publication statusPublished - 1 Jun 2019

Bibliographical note

Publisher Copyright:
© 2018, Springer Nature Switzerland AG.


Support for this work has been provided by the Scientific and Technological Research Council of Turkey under Project Number 115M465.

FundersFunder number
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu115M465


    • Auxetic materials
    • Crash tube
    • Energy absorption
    • Impact loading


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