Crashworthiness of bio-inspired multi-stage nested multi-cell structures with foam core

Le, DucHieu; Novak, Nejc; Arjunan, Arun; Baroutaji, Ahmad; Estrada, Quirino; Tran, TrongNhan; Le, HuuSon

doi:10.1016/j.tws.2022.110245

Cited by 22 publications

(2 citation statements)

References 54 publications

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“…For this reason, it is not easy to produce foams that have desired shape and properties with traditional production methods. Metal and polymer foams are among the different energy-absorbing materials as ductile materials are the most effective ways to absorb energy (Le et al ., 2023; Zhang et al ., 2021). However, the disadvantages of these energy absorbers are that they cannot be recycle and reused.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of PLA based closed porous structures manufactured using FDM process

YAVUZ

Yildirim

2023

MMMS

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PurposeThe purpose of this article covers the design and manufacture of porous materials that can be used in different engineering applications by additive manufacturing.Design/methodology/approachThe most important design parameters of the porous materials are the cell structure and wall thickness. These two design criteria are difficult to control in porous materials produced by conventional production methods. In the study, two different wall thicknesses and four different pore diameters of the porous structure were determined as design parameters.FindingsA compression test was applied to the produced samples. Also, the densities of the produced samples were compared. As a result of the study, changes in mechanical properties were observed according to the cell wall thickness and pore size.Originality/valueThe originality of the study is that, unlike traditional porous structure production, the pore structure and cell wall thicknesses can be produced in desired dimensions. In addition, a closed pore structure was tried to be produced in the study. Studies in the literature generally have a tube-type pore structure.

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Section: Introductionmentioning

confidence: 99%

Mechanical properties of PLA based closed porous structures manufactured using FDM process

YAVUZ

Yildirim

2023

MMMS

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“…Le et al [2] focus on the study of energy absorption characteristics of multi-stage, nested, and multi-cell structures inspired by the overall architecture of wood. After examining various variations, the three structures with the best performance were revealed using the adjusted MULTIMOORA evaluation method.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Aerodynamics and Drag Coefficient of the Tesla Model S Using the Siemens Star Ccm+ Software

2023

Journal of Southwest Jiaotong University

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Air resistance significantly affects a vehicle's performance, especially during high-speed operation. This study employs the Siemens Star CCM+ software to investigate the aerodynamics and drag coefficient of the Tesla Model S electric car. Computational fluid dynamics simulations were used to assess the vehicle body profile. A theoretical model was established to evaluate the effectiveness of the research methodology. This study concentrates on the aerodynamic analysis of variations in the vehicle's rear end, specifically examining the effects of changes in length and deformation in comparison to the original design. The investigation draws upon globally recognized literature and research to contribute to the understanding of these aerodynamic modifications. The results demonstrate the success of this simulation approach in determining the aerodynamic properties and drag coefficient of the Tesla Model S. Moreover, this method proves to be a time-and cost-efficient alternative to conventional techniques.

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Crashworthiness design and multi‐objective optimization of 3D‐printed carbon fiber‐reinforced nylon nested tubes

Jiang,

Zhao,

Xing

et al. 2024

Polymer Composites

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This study presents a novel variable thickness nested tube consisting of circular tube and origami tube (VTCO) designed to reduce the initial peak crushing force (PCF) under axial loading while maintaining high energy absorption. The core of this design is to achieve progressive and controlled energy absorption and to reduce peak forces as well as accelerations that can lead to passenger injuries. Nested tube structures were fabricated using short carbon fiber‐reinforced nylon composites through 3D printing technology, and quasi‐static axial compression tests were performed. The results show that equal‐thickness nested tubes consisting of circular tubes and origami tubes (ETCO) perform better in terms of energy absorption and deformation stability compared to circular and origami tubes individually. The further improved VTCO reduced the PCF by 53% and significantly improved the crash force efficiency (CFE) by 54%. The VTCO structure was parametrically investigated by means of a validated finite element model and optimized using the Non‐Symmetric Dominance Sorting Genetic Algorithm II (NSGA‐II). The optimization results provide a feasible way to adjust the structural crashworthiness to meet different engineering requirements. This study provides valuable insights into the energy‐absorbing properties of VTCO structures and is an important guide for the application and material development of novel VTCO structures.Highlights ETCO offers better energy absorption and stability than circular and origami tubes individually. VTCO is superior to ETCO in reducing PCF and increasing CFE. Multi‐objective optimization using NSGA‐II to balance conflicting crashworthiness indicators.

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Crashworthiness of bio-inspired multi-stage nested multi-cell structures with foam core

Cited by 22 publications

References 54 publications

Mechanical properties of PLA based closed porous structures manufactured using FDM process

Mechanical properties of PLA based closed porous structures manufactured using FDM process

Analysis of the Aerodynamics and Drag Coefficient of the Tesla Model S Using the Siemens Star Ccm+ Software

Crashworthiness design and multi‐objective optimization of 3D‐printed carbon fiber‐reinforced nylon nested tubes

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