Multi-objective crashworthiness optimization of square aluminum tubes with functionally graded BCC lattice structure filler

Baykaşoğlu, Cengiz; Baykasoğlu, Adil; Cetin, Erhan

doi:10.1080/13588265.2023.2183801

Cited by 16 publications

(6 citation statements)

References 72 publications

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“…In the present study, two conflicting criteria are considered: maximizing of SEA and minimizing of PCF (since increasing of SEA typically leads to an increase in PCF). 67,68 As a result, Equation 6(LTB) is applied to optimize SEA and Equation 7(STB) is employed to optimize PCF. The respective S/N ratios are detailed in Table 5.…”

Section: Optimization Based On Taguchi Methodsmentioning

confidence: 99%

Effect of triggering on the axial crushing behavior of GFRP tubes: Experimental investigation and optimization

Baykasoğlu,

Erdin

et al. 2024

Polymer Composites

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Composite thin‐walled tubes made of glass fiber reinforced plastics (GFRP) are attracting great attention due to their lightweight and outstanding crashworthiness capacity. Implementing triggers to the design of GFRP composite tubes enables a further increase in specific energy absorption while simultaneously reducing peak crushing force. Motivated by these facts, a notch‐type triggering mechanism is suggested in this work to enhance the energy absorption capabilities of circular GFRP composite tubes. GFRP tube samples with (0°/90°)8 layups are manufactured using the roll wrapping process. Subsequently, these samples are triggered and subjected to quasi‐static axial compression tests. The diameter, quantity and placement of the triggering notches are selected as design parameters, and experiments are carried out using Taguchi's L9 orthogonal array. Each of these parameters has three levels to identify the optimal combination of design parameters. To optimize multiple responses, the weighted aggregated sum product assessment, a multiple criteria decision‐making technique, is employed in conjunction with mono‐criteria optimization. The findings indicated that substantial enhancements can be realized in all parameters related to energy absorption performance by triggering progressive crushing modes in a controlled manner using a notch‐type triggering mechanism. In particular, the findings indicated that the specific energy absorption and the crush force efficiency of the intact GFRP composite tubes could be improved up to 18% and 68.3%, respectively, by the selection of appropriate triggering parameters.Highlights Axial crushing and optimal design of triggered GFRP tubes are investigated Number, diameter, and center distance of the notches are chosen as parameters Taguchi experimental design is used for the best configuration of parameters The optimum configurations are investigated using the entropy‐WASPAS Significant improvements are achieved using the trigger mechanism

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Section: Optimization Based On Taguchi Methodsmentioning

confidence: 99%

Effect of triggering on the axial crushing behavior of GFRP tubes: Experimental investigation and optimization

Baykasoğlu,

Erdin

et al. 2024

Polymer Composites

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“…Higher EA, SEA, and MCF indicate that the absorber structures have superior crashworthiness performance [28][29][30][31]. The PCF is the greatest crush force experienced throughout the crushing distance.…”

Section: Energy Absorption Indicesmentioning

confidence: 99%

“…The PCF is the greatest crush force experienced throughout the crushing distance. In terms of passenger safety, the PCF that is too high poses a threat [28][29][30][31][32]. The CFE is given as the following equation and refers to the MCF value per unit PCF value:…”

Section: Energy Absorption Indicesmentioning

confidence: 99%

Bending Behavior of 3D Printed Polymeric Sandwich Structures with Various Types of Core Topologies

TUNAY,

BODUR

2023

International Journal of Automotive Science and Technology

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In this study, bending performance and energy absorption capabilities of sandwich structures with different types of core topologies. Specifically, four types of core geome-tries including cylindrical, hexagonal, square, and triangular were investigated. Sandwich structures were fabricated using Fused Deposition Modelling (FDM) 3D printing method using polylactic acid (PLA) and carbon fiber reinforced polylactic acid (CF-PLA). The ma-terial properties of PLA and CF-PLA were determined via tensile test. Three-point bending tests were performed to achieve the energy absorption performance of sandwich struc-tures. The findings of the bending test show that the core topology has a substantial im-pact on sandwich constructions' capacity to absorb energy. Additionally, it has been ob-served that the use of different materials affects the energy absorption capacity of sand-wich structures.

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“…The specific energy absorption (SEA) represents the energy absorption per unit mass (m) of the auxetic structure. If the SEA value is higher, it implies that the structure has a greater energy absorption efficiency [45,46,49,50]. It can be calculated as follows:…”

Section: Energy Absorption Performance Indicesmentioning

confidence: 99%

Energy absorption of 2D auxetic structures fabricated by fused deposition modeling

Tunay,

Cetin

2023

J Braz. Soc. Mech. Sci. Eng.

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Auxetic structures exhibiting unusual mechanical properties from conventional materials are used in many industries and applications due to their high strength, energy absorption performance, high deformation resistance, impact resistance and flexibility. In order to further improve their mechanical properties, it is very important to investigate the deformation behavior and energy absorption characteristics of auxetic structures with different design parameters. In this context, the energy absorption performance of re-entrant auxetic structures with different design parameters i.e., strut orientation, strut angle, and strut thickness was investigated under axial loading in this study. The auxetic structures were produced by the fused deposition modeling method and the energy absorption performances of the structures were evaluated using various crashworthiness indicators such as energy absorption (EA), specific energy absorption (SEA), mean crash force (MCF), peak crash force (PCF) and crash force efficiency (CFE). Analysis of variance (ANOVA) was also implemented to determine the influence of design parameters on MCF, SEA and CFE. The results showed that the strut thickness is the highest influencing parameter on the values for all chosen energy absorption criteria. In particular, the contribution ratios of strut thickness, strut angle and strut orientation on the values of SEA are74.99%, 11.45% and 3.25%, respectively. These values are 63.74%, 7.22% and 0.92% for CFE values, respectively.

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Multi-objective crashworthiness optimization of square aluminum tubes with functionally graded BCC lattice structure filler

Cited by 16 publications

References 72 publications

Effect of triggering on the axial crushing behavior of GFRP tubes: Experimental investigation and optimization

Effect of triggering on the axial crushing behavior of GFRP tubes: Experimental investigation and optimization

Bending Behavior of 3D Printed Polymeric Sandwich Structures with Various Types of Core Topologies

Energy absorption of 2D auxetic structures fabricated by fused deposition modeling

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