Analysis and Assessment of Aluminum and Aluminum-Ceramic Foams Structure

Rogala, Michał; Tuchowski, Wojciech; Czarnecka‐Komorowska, Dorota; Gawdzińska, K.

doi:10.12913/22998624/153028

Cited by 8 publications

(7 citation statements)

References 27 publications

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“…One key strategy for improving the energy absorption is to fill the interior of the tube with materials such as aluminum foam and polyurethane (PU) [ 11 , 12 ] (as shown in Figure 1 ). Rogala et al [ 13 ] investigated the mechanical properties of aluminum porous structure using static axial compression tests and found that aluminum foam is a better energy absorber. Although these materials are prone to significant deformation under loads, they offer a strong resistance to thin-walled shell deformation once they fill the structure, substantially increasing both its crashworthiness and energy absorption capacity.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Dynamic Responses of Thin-Walled and Foam-Filled Steel Tubes Subjected to Repeated Impacts

Ge,

Luo,

Qiu

2024

Materials

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In this study, a horizontal impact setup was used to measure the dynamic responses of specimens fixed on a reaction wall and subjected to repeated impacts generated by a large-tonnage impactor. The contact force, deformation process, energy absorption, and other properties of two specimens (a thin-walled steel tube and foam-filled steel tube) were thoroughly investigated. The results demonstrated that the thin-walled tube’s properties were consistent with the four-phase and six-phase deformation models and that the foam-filled tube’s properties were consistent with the two-phase deformation model. In the early stages of the experiment, the foam-filled and thin-walled tubes were similar in terms of the contact force and energy absorption. However, when the polyurethane (PU) strain reached 0.8, the PU significantly increased the support of the tubes, reduced the contact force (by extending the contact time), and increased the energy absorption capacity by 33.6–43.5%. The crush curves of the specimens were in agreement for cases involving multiple impacts, as well as for one impact with the same impact of kinetic energy. The crush curves can be used to assess the actual performance of crashworthy devices. Furthermore, after repeated impacts, the foam-filled tube exhibited a pseudo-shakedown behavior.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Dynamic Responses of Thin-Walled and Foam-Filled Steel Tubes Subjected to Repeated Impacts

Ge,

Luo,

Qiu

2024

Materials

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“…The first performance enhancements encountered were multi-cell structures [15], which had additional walls inside in 3x3 or 4x4 arrangements that absorbed additional energy while maintaining the same external column dimensions. With the development of technology, researchers have used metal porous structures that exhibit good energy-absorption properties as filler [16][17][18][19]. In particular, aluminum foams with both open and closed pores are often used.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Triggering Mechanism of the Square Thin-Walled Absorber

Rogala,

Gajewski

2023

Adv. Sci. Technol. Res. J.

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The aim of the research is the analysis of thin-walled aluminum profiles with embossed crush initiator. Samples with square cross-section loaded dynamically were studied until the complete loss of velocity by the tup. The numerical analyses were based on an elastic-plastic material model. The material properties of AA-6063 aluminum were derived from own tests performed on a tensile machine. The analyses were conducted using the numerical method (Abaqus CAE). Using a dynamic testing machine, the obtained numerical data were verified on the basis of models showing the best improvement in crush efficiency indicators. In the experimental study, high-speed camera images were used to identify the forming plastic hinges. Based on the obtained results of experimental and numerical analysis, crush efficiency indicators were determined and compared. It was determined that the use of a passive energy absorber increases the efficiency of the crushing force by around 50%, in addition, the correct location of the crush initiator allows to gain 15%. The results of the study showed that proper placement of the crush initiator decrease Peak Crushing Force (PCF) while increasing mean crushing force (MCF).

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“…Many countries are constantly developing many protective structures designed to reduce impact damage [ 17 , 18 , 19 , 20 , 21 ]. Nowadays, many scholars have adopted similar methods, such as increasing the reinforcement ratio and composite reinforcement to strengthen the RC slab to improve the impact stiffness of the structure [ 4 , 22 , 23 ], but the concrete parts directly bear the impact load by this method, which will still cause great damage to the concrete structure.…”

Section: Introductionmentioning

confidence: 99%

Protective Behaviors of Bio-Inspired Honeycomb Column Thin-Walled Structure against RC Slab under Impact Loading

Wang

Xia

2023

Biomimetics

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In order to protect the reinforced concrete (RC) slab structure from damage under some accidental conditions, such as impacting and explosion, we used bio-inspired honeycomb column thin-walled structure (BHTS) to serve as a buffer interlayer for the concrete structure inspired by the biological structure of beetle’s elytra. The mechanical properties of AlSi10Mg used to fabricate the BHTS buffer interlayer were determined by low- and medium-speed uniaxial compression tests and numerical simulations. Subsequently, based on the drop weight impact test models, the effect of the buffer interlayer on the response of the RC slab under the drop weight tests with different energy input was compared by the impact force and duration, maximum displacement and residual displacement, energy absorption (EA), energy proportion, and other indicators. The results show that the proposed BHTS buffer interlayer has a very significant protection effect on the RC slab under the impact of the drop hammer. Due to its superior performance, the proposed BHTS buffer interlayer provides a promising solution for EA of augmented cellular structures widely used in defensive structural components, such as floor slabs, building walls, etc.

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Analysis and Assessment of Aluminum and Aluminum-Ceramic Foams Structure

Cited by 8 publications

References 27 publications

Experimental Investigation of the Dynamic Responses of Thin-Walled and Foam-Filled Steel Tubes Subjected to Repeated Impacts

Experimental Investigation of the Dynamic Responses of Thin-Walled and Foam-Filled Steel Tubes Subjected to Repeated Impacts

Analysis of the Triggering Mechanism of the Square Thin-Walled Absorber

Protective Behaviors of Bio-Inspired Honeycomb Column Thin-Walled Structure against RC Slab under Impact Loading

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