Optimal shape design of thin-walled tubes under high-velocity axial impact loads

Tanlak, Niyazi; Sonmez, Fazıl O.

doi:10.1016/j.tws.2014.07.003

Cited by 36 publications

(6 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Oblique loading for analyzing crush and optimizing multi-objective crashworthiness using multi-cell conical tube was carried out by Xiaolin and Wangyu [18]. The combination of shape optimization under high velocity axial and transverse impact loading was conducted for thin-walled tubes by Tanlak [19].…”

Section: Crashworthiness Analysis Of Octagonal-inner Double Tube Withmentioning

confidence: 99%

Crashworthiness Analysis of Octagonal-Inner Double Tube with different thickness under Off-Axis Oblique Load

Renreng

Hidayat

Djamaluddin

2020

International Journal of Mechanics

View full text Add to dashboard Cite

The crash tube is one of the important parts to reduce the effects of accidents. The design of crash tube only watches the frontal crash, but oblique crash might affect the passengers. Besides, Lack of oblique-loading researches in crashworthiness becomes causes to analyze crash tubes more. This paper aims to study crashworthiness performance of octagonal-inner double tubes under off-axis oblique impact load (0°, 10°, 20°, and 30°). The tubes have been connected with two walls, top wall as moving wall and a bottom wall as rigid wall underl different load angles. The tubes were made from Aluminum Alloy and consisted of a circular-outer tube and an octagonal-inner tube. The crashworthiness parameters of absorption of specific energy (SEA), maximum collapse force (Fmax) and efficiency of crush force (CFE) were obtained for all the structures. In order to get the value of parameters, the method of finite element analysis was used. The effects of different thickness of 1 mm, 2 mm, 3 mm and 4 mm and various oblique were studied. Based on numerical results, structures of 4 mm thickness were the greatest SEA of 26.39 kJ/kg among other thickness of structures. In addition, the value of energy absorption for tubes obliquely loaded decreased for all the size of thickness structures. Finally, this structure can be considered as crash box of vehicle in future

show abstract

Section: Crashworthiness Analysis Of Octagonal-inner Double Tube Withmentioning

confidence: 99%

Crashworthiness Analysis of Octagonal-Inner Double Tube with different thickness under Off-Axis Oblique Load

Renreng

Hidayat

Djamaluddin

2020

International Journal of Mechanics

View full text Add to dashboard Cite

show abstract

“…[15][16][17][18] As a typical thin-walled structure, the crash box plays an important role in vehicle collision accidents, which has been studied by a large number of scholars. Tanlak and Sonmez 19 found that the energy absorption performance of the crash box could be improved by changing the shape and size of crash boxes. Similar research works were performed by Lee et al 20 Also, the effect of different geometric parameters of the crash box were researched, such as axial length, thickness, mean diameter, and various sections.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization of crash box filled with three-dimensional cellular structure under multi-angle impact loading

Liang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

View full text Add to dashboard Cite

Oblique impact loading conditions are common in automobile collision accidents, which strongly influence the energy absorption performance of thin-walled structures. In this paper, a novel three-dimensional (3-D) hexagonal structure-filled crash box with better comprehensive crashworthiness under multiple working conditions is proposed. First, the finite element models of four 3-D typical cellular structures (hexagon structure, re-entrant hexagon structure, star-shape structure, double arrow structure) are established. The dynamic responses of four structures under different impact angles (from 0° to 30°) and impact velocities (from 5 to 15 m/s) are discussed. The results reveal that the 3-D hexagonal structure has great advantages in terms of the energy absorption at varying inclination angles. Second, the 3-D hexagonal structure is filled in the crash box in the form of gradient distribution. The multi-island genetic algorithm (MIGA) based on the response surface model (RSM) is utilized to explore the optimal design of crash box. Compared with the traditional crash box, the optimal 3-D hexagonal structure-filled crash box increases 18.9% in specific energy absorption and decreases 21.7% in maximum peak force, which demonstrates great potential for applications in impact engineering.

show abstract

“…Çalışmaları neticesinde iç köşe etkisinin belli bir değere kadar enerji sönümleme davranışını artırdığını ve 12 kenarlı yıldızın ise en iyi enerji sönümleme davranışını sergilediğini göstermişlerdir. Tanlak [19], ve Wangyu Liu [20] ise kare ve dairesel kesitli tüplerin enerji sönümleme davranışını geliştirmek için şekil optimizasyonu yaptıkları çalışmalarında en iyi konfigürasyonu belirlemişlerdir. Marzbanrad [21] vd.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Fonksiyonel derecelendirilmiş tüplerin enerji sönümleme davranışlarının sayısal incelenmesi

Meriç

Gedikli

2020

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

 Investigation of energy absorption properties of thin-walled variable thickness tubes  Determination of the thickness change of variable thickness tubes by optimization method  Comparison of forcedisplacement graphs of fixed thickness and variable thickness tubes Figure A. Mullti-objective optimization process of functionally graded tubs (FGT) Purpose: This study aims to numerically investigate the energy absorption behavior of functionally graded tubes. Theory and Methods: Numerical simulation and multi-objective optimization analysis were performed by Ls_Dyna software included Ls-Opt module. The optimum layer thickness determined according to highest specific energy absorption and lower peak force. Results: As a result of optimization, the optimum layer thicknesses for 0 °, 5 ° and 10 ° taper angles range from 0.53 mm to 3.90 mm, 0.53 mm to 3.96 and 0.55 mm to 3.97 mm, respectively. Conclusion: 5° taper angle tubes gives the highest peak force and absorbed energy values compared 0° and 10° tubes for fixed thickness tubes. Absorbed energy and peak force values increased with increasing layer thickness. It is possible to obtain low peak force and high specific energy absorption at the same time by optimization of VTT layer thicknesses. .

show abstract

Optimal shape design of thin-walled tubes under high-velocity axial impact loads

Cited by 36 publications

References 25 publications

Crashworthiness Analysis of Octagonal-Inner Double Tube with different thickness under Off-Axis Oblique Load

Crashworthiness Analysis of Octagonal-Inner Double Tube with different thickness under Off-Axis Oblique Load

Multi-objective optimization of crash box filled with three-dimensional cellular structure under multi-angle impact loading

Fonksiyonel derecelendirilmiş tüplerin enerji sönümleme davranışlarının sayısal incelenmesi

Contact Info

Product

Resources

About