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

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

doi:10.1007/s41939-018-00040-z

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

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

School of Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

503 Downloads (Pure)

Abstract

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

Original language	English
Pages (from-to)	119-127
Journal	Multiscale and Multidisciplinary Modeling, Experiments and Design
Volume	2
Issue number	2
Early online date	18 Dec 2018
DOIs	https://doi.org/10.1007/s41939-018-00040-z
Publication status	Published - 01 Jun 2019

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Impact Behaviouimpact Behaviour Of Triggered And Non-triggered Crash Tubes With Auxetic Latticesr Of Triggered And Non-triggered Crash Tubes With Auxetic Lattices
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abstract = "In this study, impact behavior of triggered and non-triggered tubes with and without auxetic filler are examined by using numerical methods. Material properties of tubes made of aluminum alloy and auxetic lattices utilizing ABSplus plastics are determined by using tensile tests. Finite element analyses are performed by using LS-DYNA software at 5 m/s impact velocity. Two different trigger shape are suggested and compared each other and discussed the advantages and disadvantages over nontriggered tubes. For these loading conditions, trigger mechanism provides lower peak forces and higher crash force efficiency (CFE), but lower specific energy absorption (SEA). Also, the effects of using auxetic fillers in these triggered tubes are investigated in terms crashworthiness characteristics. ",

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AU - Ataalp, Altuğ

AU - Türkmen, Halit S.

AU - Kazancı, Zafer

AU - Scarpa, Fabrizio

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

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

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