Metallic tube type energy absorbers: A synopsis

Olabi, Abdul–Ghani; Morris, Edmund; Hashmi, M.S.J.

doi:10.1016/j.tws.2007.05.003

Cited by 198 publications

(76 citation statements)

References 69 publications

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“…These structures are often tested using various loading methods such as axial impact, lateral indentation, lateral compression, splitting, and inversion. When subjected to axial loading, thin walled EAEs such as honeycombs, and circular and square tubes were found to perform optimally, absorbing marginally more energy than in other loading conditions [18,19,20,17]. Folding and buckling are found to be the most efficient way of deformation and maximum energy absorption [18].…”

Section: Introductionmentioning

confidence: 95%

“…Square and circular [17] tubes are widely applied in many transport applications ranging from rail, road and aerospace, due to inexpensive associated manufacturing processes. Nevertheless, studies show that sandwich plates incorporate the highest energy absorption capability as they possess high strength whilst being lightweight [18]. These structures are often tested using various loading methods such as axial impact, lateral indentation, lateral compression, splitting, and inversion.…”

Section: Introductionmentioning

confidence: 99%

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Application of smart honeycomb structures for automotive passive safety

Ganilova

Low

2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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Nowadays, most energy absorbing devices used in industry absorb energy through permanent deformation. In some cases, consumers have to repair or even replace energy absorbers even after a mild collision. The work presented in this paper proposes a novel re-usable solution in the form of a hybrid bumper-crush can design where a recoverable structure is integrated into the bumper beam and crush can for a mild collision situation in addition to the traditional energy absorbers recommended for more severe collisions. The main investigation is focused around the performance and optimisation of Negative Stiffness honeycomb, the recoverable structure and honeycomb-filled elements. A comprehensive study was undertaken to investigate numerically the behaviour of these energy absorbing structures under crash conditions, corresponding to real scenarios and simulated using a specially developed finite element model.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Application of smart honeycomb structures for automotive passive safety

Ganilova

Low

2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Yielding supports can be applied as one of the active means of prevention or localization of dynamic impact or reducing the intensity of dynamic loading [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…Research in [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] focuses on the elaboration of working models of tubes, and provide comparison of the obtained results with analytical and experimental studies. The works consider the cases of static and dynamic axial and transverse straining of samples made from different materials, including the combined ones (sandwich-tubes).…”

Section: Introductionmentioning

confidence: 99%

Computer simulation of yielding supports under static and short-term dynamic load

Kumpyak

Mescheulov

2018

MATEC Web Conf.

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Abstract. Dynamic impacts that became frequent lately cause large human and economic losses, and their prevention methods are not always effective and reasonable. The given research aims at studying the way of enhancing explosion safety of building structures by means of yielding supports. The paper presents results of numerical studies of strength and deformation property of yielding supports in the shape of annular tubes under static and short-term dynamic loading. The degree of influence of yielding supports was assessed taking into account three peculiar stages of deformation: elastic; elasto-plastic; and elasto-plastic with hardening. The methodology for numerical studies performance was described using finite element analysis with program software Ansys Mechanical v17.2. It was established that rigidity of yielding supports influences significantly their stress-strain state. The research determined that with the increase in deformable elements rigidity dependence between load and deformation of the support in elastic and plastic stages have linear character. Significant reduction of the dynamic response and increase in deformation time of yielding supports were observed due to increasing the plastic component. Therefore, it allows assuming on possibility of their application as supporting units in RC beams.

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“…Multiple experiments about deformation patterns of circular tubes have been carried out, under axial and lateral loading. [4] Compared with other options, expansion of deformable tubes under axial compression is a very efficient process for absorbing energy. [5] Generally, the impact forces of ideal energy absorption structures are required to be smooth, and the deformation should be controlled.…”

Section: Introductionmentioning

confidence: 99%

Structural Optimum Design of a Railcar Coupler Energy Absorbing Device

Li¹,

Yan²,

Wen³

et al. 2017

dtetr

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Abstract. In this paper, we carried out a structural optimization of an railcar coupler energy absorbing device. we established a finite element (FE) model and validated it by experimental results. We used a central composite design (CCD) and Hammersley design of experiments (DOE) to take samples for the variables. Based on these samples, we built an approximation model with the moving least squares method (MLAM). The maximum error percentage of the model was 2.30%. The main effect analysis indicated that the thickness T had the more significant effect on the average mean force (Favg) and the specific energy absorption (SEA). Considering the average mean force, fracture and buckling of the structure as constraints, we carried out parameter optimization using the global response surface method (GRSM) to gain a higher SEA. Finally, we obtained the optimum parameters (T = 7.72 mm, ɑ = 29.34º) with the SEA value of 35.28 kJ/kg. The value of SEA increased by 56.18%.

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Metallic tube type energy absorbers: A synopsis

Cited by 198 publications

References 69 publications

Application of smart honeycomb structures for automotive passive safety

Application of smart honeycomb structures for automotive passive safety

Computer simulation of yielding supports under static and short-term dynamic load

Structural Optimum Design of a Railcar Coupler Energy Absorbing Device

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