Experimental study of impact energy absorption in aluminium square tubes with thermal triggers

Peixinho, Nuno; Soares, Delfim; Vilarinho, Cândida; Pereira, Pedro Henrique R.; Dimas, Dina

doi:10.1590/s1516-14392012005000011

Cited by 17 publications

(3 citation statements)

References 6 publications

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“…Literature confirms the effectiveness of the mentioned approach especially when applied to sheet metal parts [6,7], whereas only few examples deal with the possibility to apply a local modification to tubular components [8]. In a previous work, the authors investigated experimentally the effect of laser treatments on the formability of AA6063 tubular samples subjected to expansion tests with elastomer [9]: in particular, tubes in the T6 conditions were heated by means of a CO2 laser beam, along linear tracks parallel to the tube axis, to locally bring the material in the overaged state.…”

Section: Introductionmentioning

confidence: 88%

Investigation of the Tube Expansion Test with Elastomer Using Locally Overaged AA6063 Tubes

Piccininni

Silva

Palumbo

2022

KEM

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The definitive implementation of Aluminium alloys as the main choice for lighter structural components needs the availability of innovative manufacturing processes capable of overcoming their poor formability at room temperature. The local modifications of the material properties (by means of short-term heat treatments) have shown their effectiveness in such terms. In a previous study from the same authors, it was experimentally investigated that, if a AA6063-T6 tubular component is locally brought to the overaged condition, its strain behavior significantly changes during an expansion test with elastomer. In light of this, the equipment used for the tube expansion tests was simulated by means of a FE model created using Abaqus and properly tuned using data coming from experimental tests carried out on AA6063-T6 tubular specimens. The calibrated model could be thus used to simulate the tube expansion while considering several distributions of the material properties (obtained through different heating strategies). Numerical results confirmed the possibility to change the slope of the strain path, thus suggesting that the strain behavior of a tubular component can be tailored, according to the specific applications, by properly designing the laser heating strategy.

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Section: Introductionmentioning

confidence: 88%

Investigation of the Tube Expansion Test with Elastomer Using Locally Overaged AA6063 Tubes

Piccininni

Silva

Palumbo

2022

KEM

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“…Thus, properties for analysis, such as, displacements, linear velocities and accelerations were obtained by a Photon Ultima APX-RS camera through video sequences, for each experiment, and then processed by the image tracking software, TEMA Motion. The technical procedure, preparation, as well as other main considerations can be found in references 20,21 .…”

Section: Experimental Impact Testingmentioning

confidence: 99%

Experimental and Numerical Assessment of the Impact Test Performance Between Two UHSS Toe Cap Models

Peixinho

Costa²,

Mendonça

2022

Mat. Res.

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This paper presents an integrated approach for an ultimate high-performance safety toe cap with significant milestones in slim design and weight saving. The study of crashworthiness properties was performed through impact-crash test conditions exploring the potential of applicant solutions by the combination of an advanced high-strength steel and enhanced geometric stiffening models. The structural response for a significant thickness reduction was assessed and it provides an evolved discussion for improvements in energy absorption capacity. The present case study focuses on two geometric models from the S3 slim toe cap development by prototypes made of a martensitic 1200 steel alloy. The comparison of results is complemented using numerical simulation models with mathematical description of the dynamic plasticity behaviour by applying a constitutive Cowper-Symonds equation with fundamental parameters for material strain-rate dependence.

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“…After the completion of the first fold, the force begins decrease to a minimum level where the contact outward happened. After that, the further deformation causes the load to increase until the next peak is formed with the formation of the second fold [10]. Table 4 show the energy absorption crash boxes model under quasi-static loading.…”

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confidence: 99%

Crashworthiness Behavior of Hollow Al-Based Functionally Graded Material (FGM) Box under Quasi-Static Loading

Jamian

Abidin

Muda

2015

AMM

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Abstract. This study aims to investigate the crashworthiness behavior of hollow Al-based functionally graded material (FGM) box. In order to introduce the concept of FGM, several holes are known as trigger points were drilled on a thin-walled Al column. The column was divided into four segments and each segment has a different number of trigger points. The difference number of trigger points on each segment produces the different structural strength. Quasi-static loading test was conducted in order to observe the deformation pattern occurred. The corresponding graph of force versus distance then was analyzed to obtain the value of energy absorption for each sample. Five samples of different segment arrangement were tested, namely, S1a, S1b, S2, S3 and S4. From the results obtained, the sample S1b give the best results with the highest value of energy absorption. This sample is designed with a large number of trigger points in the first segment, followed by a reduced number of trigger points until the end of the segment. The quality of crash box can be improved by introducing FGM concept. This type of crash box is able to produce a grade of absorption crushing energy. Thus it can reduce severity of injury during an accident.

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Experimental study of impact energy absorption in aluminium square tubes with thermal triggers

Cited by 17 publications

References 6 publications

Investigation of the Tube Expansion Test with Elastomer Using Locally Overaged AA6063 Tubes

Investigation of the Tube Expansion Test with Elastomer Using Locally Overaged AA6063 Tubes

Experimental and Numerical Assessment of the Impact Test Performance Between Two UHSS Toe Cap Models

Crashworthiness Behavior of Hollow Al-Based Functionally Graded Material (FGM) Box under Quasi-Static Loading

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