On the axisymmetric progressive crushing of circular tubes under axial compression

Bardi, F. C.; Yun, Heedo; Kyriakides, Stelios

doi:10.1016/s0020-7683(03)00111-2

Cited by 71 publications

(19 citation statements)

References 17 publications

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“…Totally five lobes formed experimentally and numerically in the concertina mode of deformation. Further, the sequences of experimental and numerical concertina mode of deformation observed in this study were almost the same with those of previous studies [9,18,19,21]. The sequence of deformation is marked with the letters (A, B, C, D and E) and the numbers (1-10) in experimental and numerical load-displacement curves in Fig.…”

Section: Free-constraint Tubessupporting

confidence: 87%

“…This sequence of tube wall deformation repeats as the third, fourth and fifth folds form, except the inner and outer fold formation (point C and D, respectively) starts at the same point in the forth and fifth folds. The removal of the intermediate part of the cycle at the later stages of the tube folding is also noted previously [18]. The deformation sequence of the numerical tube crushing is also found to be very similar to that of experiments and also shown in Fig.…”

Section: Free-constraint Tubessupporting

confidence: 86%

“…Aljawi [17] studied the axial crushing of circular tubes experimentally and numerically and found well agreement between the numerical force histories of tubes with those obtained by the experiments. Bardi et al [18] studied the axisymmetric progressive crushing of circular tubes, both experimentally and numerically. The used model demonstrated that the changes in the loading cycles with increasing the number of folds were due to the differences between the inner and outer folds, which in turn affected the self contact of the fold walls.…”

Section: Introductionmentioning

confidence: 99%

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The effect of tube end constraining on the axial crushing behavior of an aluminum tube

Taşdemirci¹

2008

Materials & Design

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a b s t r a c tThe effect of various types of end constraining on the deformation and load-displacement behavior of a 3003-H14 Al tube were experimentally and numerically studied. No effect of single-end constraining of tubes was found. Few conditions of double-end constraining tended to revert the deformation mode to mixed and/or diamond mode of deformation. Double-end constraining of tube ends further resulted in an increase in initial drop-load values, widening the initial overshot region in average load-displacement curves. The agreement between numerical and experimental results showed the capabilities of the used numerical model in order to predict end-condition effects in tubular structures.

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Section: Free-constraint Tubessupporting

confidence: 87%

Section: Free-constraint Tubessupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

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The effect of tube end constraining on the axial crushing behavior of an aluminum tube

Taşdemirci¹

2008

Materials & Design

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“…(Events reminiscent of those observed in progressive crushing of single tubes-e.g. see Wierzbicki et al (1992), Bardi et al (2003)) As the panel is crushed further the load goes through a third peak and is unloaded at w . The beginning of the formation of a third fold in the upper half can be seen in images w .…”

Section: Methodsmentioning

confidence: 99%

Buckling and progressive crushing of laterally loaded honeycomb

Wilbert¹,

Jang²,

Kyriakides³

et al. 2011

International Journal of Solids and Structures

122

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a b s t r a c tThis paper presents a comprehensive study of the lateral compressive response of hexagonal honeycomb panels from the initial elastic regime to a fully crushed state. Expanded aluminum alloy honeycomb panels with a cell size of 9.53 mm, a relative density of 0.026, and a height of 15.9 mm are laterally compressed quasi statically between rigid platens under displacement control. The cells buckle elastically and collapse at a higher stress due to inelastic action. Deformation then first localizes at mid-height and the cells crush by progressive formation of folds; associated with each fold family is a stress undulation. The response densifies when the whole panel height is consumed by folds. The buckling and crushing events are simulated numerically using finite element models involving periodic domains of a single or several characteristic cells. The models idealize the microstructure as hexagonal, with double walls in one direction. The nonlinear behavior is initiated by elastic buckling while inelastic collapse that leads to the localization observed in the experiments occurs at a significantly higher load. The collapse stress is found to be mildly sensitive to various problem imperfections. The subsequent folding can be reproduced numerically using periodic domains but requires a fine mesh capable of capturing the complexity of the folds. The calculated crushing response is shown to better resemble measured ones when a 4 Â 4 cell domain is used. However, the average crushing stress can be captured with engineering accuracy even from a single cell domain.

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“…Thinwalled metal tubes can deform through different modes according to different loading and boundary conditions. For axial loading conditions, the tubes mainly deform through axial crushing mode [20][21][22][23][24][25][26], inversion mode [27][28][29][30][31][32][33] and splitting mode [34][35][36][37][38][39]. Axial crushing mode shows high specific energy absorption, high stroke efficiency and stable progressive buckling behavior, becoming one of the most efficient and widely used modes.…”

Section: Introductionmentioning

confidence: 99%

Crushing behavior of a thin-walled circular tube with internal gradient grooves fabricated by SLM 3D printing

Yang

Wei

et al. 2017

Thin-Walled Structures

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On the axisymmetric progressive crushing of circular tubes under axial compression

Cited by 71 publications

References 17 publications

The effect of tube end constraining on the axial crushing behavior of an aluminum tube

The effect of tube end constraining on the axial crushing behavior of an aluminum tube

Buckling and progressive crushing of laterally loaded honeycomb

Crushing behavior of a thin-walled circular tube with internal gradient grooves fabricated by SLM 3D printing

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