Dynamic crashing and impact energy absorption of extruded aluminum square tubes

Kim, Dong-Kuk; Lee, Sunghak; Rhee, M. H.

doi:10.1016/s0261-3069(98)00026-0

Cited by 23 publications

(9 citation statements)

References 10 publications

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“…Langseth and Hopperstad [7] investigated the behaviour of metal square tubes under quasi-static and low-velocity impact loading, experimentally and found that a symmetric deformation mode is formed for the static tests, while in the dynamic tests a mixture of modes is observed. Kim et al [8] studied the crushing behaviour and impact energy absorption of extruded aluminium square tubes. It has been discussed in reference [9] that considering the flow stress in the analysis of thin-walled structures, leads to a better description of the material behaviour.…”

Section: Introductionmentioning

confidence: 99%

A quasi-static and low-velocity impact crushing investigation on a metal square tube

Sadighi

Mahmoudabadi

Karamnejad

2011

Proceedings of the Institution of Mechanical Engineers, Part C:

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The crushing of a metal square tube under quasi-static and low-velocity impact loading is investigated, theoretically and numerically. A modified Wierzbicki's static model in the crush analysis of hexagonal honeycomb is extended to the crushing of metal square tubes. Rewriting the internal energy terms and the external work in the energy method through the basic element folding by considering the true cylindrical curvature effects and the flow stress of the tube material leads to a better prediction of the mean crushing force and the half-wavelength of the folding mode of these energy absorbers under quasi-static loading. Afterwards, the present static model is extended to the low-velocity impact crushing of the metal square tube, and for the first time, an analytical model is presented for the study of the low-velocity impact crushing of these energy absorbers. The required initial velocity of the projectile for decreasing the length of these structures from the initial value to a desired value is calculated. A finite-element model (FEM) is developed in the ABAQUS software and the validity of the FEM is demonstrated by comparisons of numerical results with the experimental data available in the literature. Afterwards, results for mean crushing load and half-wavelength of the folding mode in the static loading and initial velocity of the projectile in the impact loading are compared to those of the present and previous theoretical models for various wall thicknesses and widths. A good agreement between results obtained using FEM and present models are observed.

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Section: Introductionmentioning

confidence: 99%

A quasi-static and low-velocity impact crushing investigation on a metal square tube

Sadighi

Mahmoudabadi

Karamnejad

2011

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Aluminum alloy has a Young's modulus that is one-third that of commonly used steel materials, giving it the disadvantage of low rigidity. In addition, the whole buckles become large when thickness is increased, and causing axial compression deformation, which cannot effectively absorb collision energy [3].The tubular bodies with polygonal tubes and cellular cross sections have been studied as a means to effectively absorb energy [4]. Additionally, an influence of axial length on dynamic axially compressed aluminum tubes is being considered [5][6][7].It is known that elastic deformation occurs in the entire square tube prior to plastic deformation when the square tube deforms.…”

Section: Introductionmentioning

confidence: 99%

Deformation Behavior of a Polygonal Tube under Oblique Impact Loading

Yokoya

2019

Materials Research Proceedings

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“…Kim et al 4 investigated the compressive deformation behavior under dynamic loading to evaluate impact energy absorption by extruded aluminum tubes for space frame design, experimentally. Singace 5 examined the collapse of tubes in the multi-lobe in an attempt to evaluate the crushing load.…”

Section: Introductionmentioning

confidence: 99%

Introducing a new cold metal forming method for producing a fold in the circular tubes with a certain wavelength

Rahmani

Niknejad

2014

Proceedings of the Institution of Mechanical Engineers, Part B:

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This article introduces a new metal forming process for creating a fold with a controllable and certain wavelength into the circular metal tubes during the axial compression. Also, a new analytical model of plastic deformation of the circular metal tubes constrained between two rigid punches subjected to quasi-static axial loading is introduced. Based on the deformation model, some theoretical relations are derived to predict the instantaneous axial load of a complete fold creation into the tubes versus the axial displacement in the elastic and plastic zones. Four different mechanisms of energy absorption are considered in the present theoretical model: two kinds of bending mechanism around circular hinge lines, circumferential expansion and unbending mechanism corresponding to meridian strain. Theoretical prediction shows that the required axial load for creating a complete fold in a constrained metal tube between two rigid punches is dependent on the tube wall thickness, internal radius and initial free length of the tube and also tube material properties. Also, some quasi-static axial compression tests were performed on the circular tubes of brass and aluminum alloys between two rigid punches, and the results were compared with the theoretical predictions that showed a reasonable agreement. Furthermore, the experimental observations show that wavelength of a complete created fold into the circular tubes could be controlled using two rigid dies during the folding process and using the poly(vinyl chloride) Teflon as the filler, instead of the intrinsic wavelength of the tube.

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Dynamic crashing and impact energy absorption of extruded aluminum square tubes

Cited by 23 publications

References 10 publications

A quasi-static and low-velocity impact crushing investigation on a metal square tube

A quasi-static and low-velocity impact crushing investigation on a metal square tube

Deformation Behavior of a Polygonal Tube under Oblique Impact Loading

Introducing a new cold metal forming method for producing a fold in the circular tubes with a certain wavelength

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