Effect of quadrilateral discontinuity size on the energy absorption of structural steel profiles

Estrada, Quirino; Szwedowicz, Dariusz; Majewski, Tadeusz; Martinez, Eladio; Rodriguez-Mendez, Alejandro

doi:10.17531/ein.2016.2.5

Cited by 9 publications

(7 citation statements)

References 15 publications

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“…Empty and foam-filled circumferentially grooved thick-walled circular tubes under axial low velocity impact were investigated theoretically and experimentally by A. Darvizeh et al [8]. In [9] the effect of discontinuity size on the energy absorption performance of square profiles was reported. In [16] the authors studied the behavior of tubular columns with dents, but these flaws were treated as imperfections coming from damage.…”

Section: State Of the Art: An Overviewmentioning

confidence: 99%

Energy absorption capability numerical analysis of thin-walled prismatic tubes with corner dents under axial impact

Ferdynus¹,

Kotełko²,

Král³

2018

Eksploatacja i Niezawodność – Maintenance and Reliability

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EnErgy absorption capability numErical analysis of thin-wallEd prismatic tubEs with cornEr dEnts undEr axial impact numEryczna analiza EnErgochłonności ciEnkościEnnych słupów pryzmatycznych z przEtłoczEniamiThe paper presents results of a parametric study into energy absorption capability of thin-walled square section columns with redrawn dents, subjected to axial impact compressive load. Thin-walled aluminum tubes with four dents in the corners were under investigation. The varying parameters were the dent's depth and distance of the dent to the base. The study was performed using Finite Element numerical code. Three crashworthiness indicators were examined: peak crushing force, crash load efficiency and stroke efficiency. The numerical results are shown in load-shortening diagrams, as well as diagrams and maps of crashworthiness indicators. It was found, that the main factor influencing a crushing mode and, subsequently, energy absorption capability, is a dent depth. The dent distance from the base is of less importance. Also a position of a dent, either at the bottom, or at the top base (the load application point) does not influence the crushing behavior significantly. For the deepest dents the relative increase of crash load efficiency (CLE) amounts 25% in comparison with the column without dents.

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Section: State Of the Art: An Overviewmentioning

confidence: 99%

Energy absorption capability numerical analysis of thin-walled prismatic tubes with corner dents under axial impact

Ferdynus¹,

Kotełko²,

Král³

2018

Eksploatacja i Niezawodność – Maintenance and Reliability

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“…The energy absorption due to elastic and plastic deformation can be calculated from Equation 1. This refers to work done by the external force (F) along to the displacement (  ).…”

Section: Crashworthiness Indicatorsmentioning

confidence: 99%

“…In all cases, the failure and fracture of some elements located on the corners and ribs were observed. The deformation pattern of the columns was characterised by a symmetrical deformation mode described in [1].…”

Section: Square Multi-cell Profilesmentioning

confidence: 99%

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Numerical simulations of crashworthiness performance of multi-cell structures considering damage evolution criteria

et al. 2017

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Abstract. In this paper finite element software Abaqus was used to analyse the effect of cross-sectional shape on the crashworthiness performance of multi-cell profiles. An emphasis was placed on the modelling of the damage initiation criteria and its evolution during the crash event. The structures evaluated included square and circular multi-cell cross-sections fabricated with aluminium alloy EN AW-7108 T6. During the crash simulations, the structures were subjected to axial impact loads using a 500-kg rigid body striker with an initial velocity of 10 m/s. Accordingly to our results, profiles with circular cross-section base presented better crashworthiness performance than square profiles. An increase in crush force efficiency to 36.9% and specific energy to 35.4% was observed when a circular cross-section has been reinforced in the transversal and longitudinal directions. Finally, it was corroborated that the addition of the damage initiation criteria allowed for more reliable crash simulations of the structures.

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“…Estrada et al [ 20 ], in their paper, analyzed the effect of discontinuity size on energy absorption performance of steel square profiles. Cut-outs made in the profiles were of square, rectangular, or diamond shape.…”

Section: Introductionmentioning

confidence: 99%

Energy Absorption Capability of Thin-Walled Prismatic Aluminum Tubes with Spherical Indentations

2020

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The paper presents the results of numerical tests of impact and energy absorption capacity of thin-walled columns, subjected to axial impact loading, made of aluminum alloy, and having a square cross-section and spherical indentations on their lateral surfaces. The numerical models were validated using an experiment that was conducted on the Instron CEAST 9350 High Energy System drop hammer. Material properties of the applied aluminum alloy were determined on the basis of a static tension test. The crushing behavior of the columns and some crashworthiness indicators were investigated. On the basis of the results of the conducted analyses, conclusions were drawn about the most beneficial design/constructional variants in terms of achieved crashworthiness parameters.

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Effect of quadrilateral discontinuity size on the energy absorption of structural steel profiles

Cited by 9 publications

References 15 publications

Energy absorption capability numerical analysis of thin-walled prismatic tubes with corner dents under axial impact

Energy absorption capability numerical analysis of thin-walled prismatic tubes with corner dents under axial impact

Numerical simulations of crashworthiness performance of multi-cell structures considering damage evolution criteria

Energy Absorption Capability of Thin-Walled Prismatic Aluminum Tubes with Spherical Indentations

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