Experimental and numerical crushing performance of crash boxes filled with re-entrant and anti-tetrachiral auxetic structures

Günaydın, Kadir; Gülcan, Orhan; Türkmen, Halit S.

doi:10.1080/13588265.2022.2115962

Cited by 18 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Auxetic tubular structures have been investigated for EA systems, such as crash protection in automobiles or impact mitigation in structural components. Their ability to dissipate energy efficiently under compression can enhance the safety and durability of such systems [151]. Lee et al [19] investigated the behavior of auxetic honeycomb and re-entrant tubes and compared them with simple tubes in terms of their response to low-speed impact and crash behavior.…”

Section: Ea Systemsmentioning

confidence: 99%

Potential and applications of auxetic tubular: a review

Ramezani,

Rahmani

2024

Funct. Compos. Struct.

View full text Add to dashboard Cite

Auxetic materials, possessing a negative poisson's ratio, can be arranged in various geometric configurations, such as tubular structures. Unlike conventional materials, which contract in lateral dimensions when stretched longitudinally, auxetic tubular expands in response to applied forces. This review article amalgamates the latest experimental data and insights from preceding scholarly works, offering a detailed analysis of the structural design, fabrication processes, and mechanical characteristics of auxetic tubular structures. The review encompasses an analysis of their tensile properties, comparative evaluations with different materials, impact resistance, enhanced bending, and flexibility. Furthermore, the article explores the wide-ranging applications of auxetic tubular in diverse sectors such as automobile manufacturing, aerospace, medicine, and textiles. Additionally, investigated not only new suggestions and future considerations for the advancement of these materials and structures but also a rigorous examination of the forthcoming and new challenges. This multifaceted approach distinguishes it from prior studies within the same scientific domain.

show abstract

Section: Ea Systemsmentioning

confidence: 99%

Potential and applications of auxetic tubular: a review

Ramezani,

Rahmani

2024

Funct. Compos. Struct.

View full text Add to dashboard Cite

show abstract

“…These crash boxes were useful in the mitigation of impact loads to the vehicle cabinet to prevent injuries. Energy absorption of crash boxes filled with re-entrant and anti-tetra-chiral structures was improved by 28.5% and 20.6%, respectively (Günaydın et al , 2022a). In addition, the re-entrant core was proved to be better than tetra-chiral configuration in crash box design (Aktaş et al , 2022).…”

Section: Applicationsmentioning

confidence: 99%

Review on impact, crushing response and applications of re-entrant core sandwich structures

Al-Khazraji

2024

AEAT

View full text Add to dashboard Cite

Purpose Auxetic sandwich structures are gaining attention because of the negative Poisson’s ratio effect offered by these structures. Re-entrant core was one configuration of the auxetic structures. There is a growing concern about the design and behavior of re-entrant cores in aerospace, marine and protection applications. Several researchers proposed various designs of re-entrant core sandwiches with various materials. The purpose of this study is to review the most recent advances in re-entrant core sandwich structures. This review serves as a guide for researchers conducting further research in this wide field of study. Design/methodology/approach The re-entrant core sandwich structures were reviewed in terms of their design improvements, impact and quasi-static crushing responses. Several design improvements were reviewed including 2D cell, 3D cell, gradient, hierarchical and hybrid configurations. Some common applications of the re-entrant core sandwiches were given at the end of this paper with suggestions for future developments in this field. Findings Generally, the re-entrant configuration showed improved energy absorption and impact response among auxetic structures. The main manufacturing method for re-entrant core manufacturing was additive manufacturing. The negative Poisson’s ratio effect of the re-entrant core provided a wide area of research. Originality/value Generally, re-entrant cores were mentioned in the review articles as part of other auxetic structures. However, in this review, the focus was solely made on the re-entrant core sandwiches with their mechanics.

show abstract

“…Studies showed that auxetic foam filled tubes had 41.3% and 14.3% higher energy absorption capability than empty tubes and tubes with conventional foam filled, respectively [11]. In another study, it was stated that specific energy absorption of anti-tetrachiral and reentrant lattices filled tubes were 28.5% and 20.6% higher than empty tube, respectively [12]. It was also stated that tubes with auxetic foam filled had better progressive collapse compared to empty tubes and tubes with conventional foam filled [13].…”

Section: Introductionmentioning

confidence: 99%

Air blast response of sandwich structures with auxetic cores under in-plane and axial loadings

Günaydın¹,

Gülcan²

2023

Res. Eng. Struct. Mater.

View full text Add to dashboard Cite

Blast loading due to an explosion nearby may generate severe damages on the target. Therefore, engineering structures need to be designed by considering blast loads due to terrorist attacks, accidental explosions or natural disasters. Sandwich structures are good candidates for blast loading applications and core section of these panels are very important to absorb blast loads. This study focused on blast resistance of sandwich structures with lattice core designs. Sandwich panels with honeycomb cores and re-entrant and double arrowhead auxetic cores, which are common and easy to produce in comparison to other type of lattice structures, were used to investigate the impact of core design on front and back face sheet thicknesses, total absorbed energy and maximum stress under in-plane and axial loading due to an explosion. Results revealed that sandwich structures absorb more energy when loaded along axial direction than in-plane direction. According to the simulation results, double arrowhead core outperformed by showing the lowest stress, front and back face displacement and the highest total energy absorption.

show abstract

Experimental and numerical crushing performance of crash boxes filled with re-entrant and anti-tetrachiral auxetic structures

Cited by 18 publications

References 45 publications

Potential and applications of auxetic tubular: a review

Potential and applications of auxetic tubular: a review

Review on impact, crushing response and applications of re-entrant core sandwich structures

Air blast response of sandwich structures with auxetic cores under in-plane and axial loadings

Contact Info

Product

Resources

About