A parametric study of the mechanical behavior of nested multi tube structures under quasi-static loading

Chahardoli, S.; Nia, Ali Alavi; Asadi, Mehrdad

doi:10.1016/j.acme.2019.03.006

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…While MOO is generally applied for optimization, MODM allows for identifying the most suitable design when multiple designs are involved. Examples of the application of MOO for crashworthiness optimization of thinwalled and foam-filled tubes can be found in the works of Hou et al [27][28][29] and other authors [30][31][32][33]. When it comes to MODM, Tarlochan et al [34] applied the COPRAS method to identify the best-performing tube design from comparable alternatives.…”

Section: Introductionmentioning

confidence: 99%

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

Novak²,

Arjunan³

et al. 2023

Thin-Walled Structures

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Section: Introductionmentioning

confidence: 99%

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

Novak²,

Arjunan³

et al. 2023

Thin-Walled Structures

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“…Several studies were focused on nested tubes which can be considered as useful experimental investigations. 31,32 Some studies have used LS-DYNA software to simulate structures, works done by Chahardoli et al 33,34 are two of them.…”

Section: Introductionmentioning

confidence: 99%

Introducing new nested absorbers with square cross-sections and optimization of their performance using Response Surface Method under quasi-static loading

Chahardoli

Attar

Ziaie

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Thin-walled structures with nested cross-sections have been introduced in recent years as structures with high energy absorption capacity. In this research, a new type of energy absorbers is introduced, which is a combination of two different elements which are subjected to lateral and axial loads simultaneously. The study has been done experimentally and numerically; in the numerical part, LS-DYNA software was used for computer simulations. The outer part of the introduced absorbers has square shells with a thickness of two millimeters that absorbs energy under lateral loading. The inner part of new absorbers is a shell with a rectangular cross-section that collapses under axial compression. The obtained results showed that these structures can increase the energy absorption by 36 and 32% of the total energy absorbed through each component separately. In the experimental part, the accuracy of numerical results was checked, and good agreement was observed. In the final part of this research, using Minitab software and based on the response surface method (RSM), the most optimal absorbers in terms of specific energy and maximum force were introduced.

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“…3 During an accident, the beams used in the body of the car reduce the intensity of the impact caused by the collision by absorbing part of the kinetic energy of the accident, and in this way, a gentler impact is inflicted on the passengers. In addition to beams that are subjected to bending, energy absorbers 4,5 and sandwich panels 6 are also widely used in the automotive industry. These structures were mainly made by metal thin-walled profiles like aluminum, [7][8][9] copper, 10 and steel.…”

Section: Review Of Literature and Introductionmentioning

confidence: 99%

“…Fm or Pf is the highest amount of force that can be seen in each curve and is usually accrued in the first stages of crushing. These three parameters can be written using equations (1) to (4). If the average force obtained in relation (3) is divided by the Pf , the CFE is obtained, this parameter can also be expressed as a percentage and it can be written similar to equation (4).…”

Section: Review Of Literature and Introductionmentioning

confidence: 99%

Investigating hole effects on bending performance of aluminum beams with square cross-sections under three-point bending load and their implementation in light vehicles

Shen¹,

Zahra²

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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The bending behavior of beams with a square cross-section containing holes under a three-point bending load was investigated in the present study. As aluminum alloys are lighter than steel and there are many automobile companies that use this material, 6063 aluminum alloy was chosen for this study. The present research was carried out both experimentally and numerically. In the numerical section, aluminum beams were simulated with the finite element software LS-DYNA. These beams contained holes with a diameter of 21 mm, which were placed at different distances on the length of the beam. In this research, 36 perforated beams were simulated in three thicknesses: 1, 1.5, and 2, and the holes were placed at 0, 3.5, 7, 10.5, 14, 17.5, 21, 24.5, 28, 35, 42, and 49 mm in relation to the middle of the beam. In addition, a beam without holes was studied for each thickness. Numerical simulations were validated with experiments and good results were observed. The obtained results showed that as the hole moves from the center to the sides, the absorption of energy and maximum force increases. In the final section, the most optimal beams were determined in terms of thickness and hole location, and based on these a car bumper was proposed.

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A parametric study of the mechanical behavior of nested multi tube structures under quasi-static loading

Cited by 8 publications

References 19 publications

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

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

Introducing new nested absorbers with square cross-sections and optimization of their performance using Response Surface Method under quasi-static loading

Investigating hole effects on bending performance of aluminum beams with square cross-sections under three-point bending load and their implementation in light vehicles

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