Dynamic progressive buckling of circular and square tubes
TL;DR: In this paper, a series of over 120 axial crushing tests were conducted on circular and square steel tubes loaded either statically or dynamically, and approximate theoretical predictions for static and dynamic progressive buckling were developed.
About: This article is published in International Journal of Impact Engineering.The article was published on 1986-01-01. It has received 800 citations till now. The article focuses on the topics: Buckling.
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TL;DR: In this paper, an experimental program consisting of 96 tests was carried out to study the axial deformation behavior of triggered, circular AA6060 aluminium extrusions filled with aluminium foam under both quasistatic and dynamic loading conditions.
587 citations
TL;DR: In this article, the main features of progressive folding and progressive crushing in tubes subjected to axial compression are summarised, with particular reference to the geometry of the folded or crushed region and the force-displacement response.
502 citations
TL;DR: In this article, a total of 70 quasi-static tests were conducted on circular 6060 aluminium tubes in the T5, as-received condition and the average crush force, FAV, was non-dimensionalised and an empirical formula established as FAV/MP=72.3(D/t)0.32.
413 citations
TL;DR: In this article, a comprehensive overview of the recent developments in the area of crashworthiness performance of thin-walled (TW) tubular components is given with a special focus on the topics that emerged in the last ten years such as crashworthiness optimisation design and energy absorbing responses of unconventional TW components including multi-cells tubes, functionally graded thickness tubes and functionally graded foam filled tubes.
Abstract: Over the past several decades, a noticeable amount of research efforts has been directed to minimising injuries and death to people inside a structure that is subjected to an impact loading. Thin-walled (TW) tubular components have been widely employed in energy absorbing structures to alleviate the detrimental effects of an impact loading during a collision event and thus enhance the crashworthiness performance of a structure. Comprehensive knowledge of the material properties and the structural behaviour of various TW components under various loading conditions is essential for designing an effective energy absorbing system. In this paper, based on a broad survey of the literature, a comprehensive overview of the recent developments in the area of crashworthiness performance of TW tubes is given with a special focus on the topics that emerged in the last ten years such as crashworthiness optimisation design and energy absorbing responses of unconventional TW components including multi-cells tubes, functionally graded thickness tubes and functionally graded foam filled tubes. Due to the huge number of studies that analysed and assessed the energy absorption behaviour of various TW components, this paper presents only a review of the crashworthiness behaviour of the components that can be used in vehicles structures including hollow and foam-filled TW tubes under lateral, axial, oblique and bending loading.
406 citations
Cites background from "Dynamic progressive buckling of cir..."
...[133] S. R. Reid, “Laterally compressed metal tubes as impact energy absorbers,” in Structural Crashworthiness (eds N. Jones and T. Wierzbicki), 1983, p. Chapter 1....
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...[58] W. Abramowicz and N. Jones, “Transition from initial global bending to progressive buckling of tubes loaded statically and dynamically,” Int....
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...Abramowica and Jones [58] reported that square tubes with greater b/t or circular tubes with greater D/t have longer Lcr. Karagiozova and Alves [61] found that Lcr increases as the impact velocity increase....
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...The experimental results obtained by Abramowicz and Jones [58], who investigated the transition of mild steel circular and square tubes from the inelastic global Euler buckling mode to the progressive folding mode, showed that there is a critical tube length (Lcr) where the tubes with lengths less than the critical value deform progressively while tubes longer than the critical length undergo a global bending mode....
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...[275] N. Jones and W. Abramowicz, “Static and dynamic axial crushing of circular and square tubes,” Reid SR, Ed....
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TL;DR: In this article, an experimental investigation was carried out to study the behavior of square thin-walled aluminium extrusions in alloy AA6060 subjected to axial loading, and both static and dynamic tests were performed and the primary variables were the wall thickness and temper of the square tubes and the impact velocity of the projectile.
355 citations
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994 citations
TL;DR: In this paper, the axial progressive crushing of square box columns using a kinematically admissible method of analysis was investigated and four deformation modes which govern the behaviour for different ranges of the parameter c/h.
710 citations
TL;DR: A series of axial crushing tests on steel circular cylindrical shells loaded either statically or dynamically is reported and compared with various theoretical predictions and empirical relations in this article, where a modified version of Alexander's theoretical analysis for axisymmetric, or concertina, deformations gives good agreement with the experimental results when the effective crushing distance is considered and provided that the influence of material strain rate sensitivity is retained in the dynamic crushing case.
513 citations
TL;DR: In this paper, thin-walled circular cylinders and truncated circular cones of aluminium alloy were subjected to axial static loading and their initial axial length and the outside diameter of cylinders and frusta were kept constant whilst their wall thickness was varied.
194 citations
TL;DR: In this paper, a simplified theoretical model of a compressed rigid-linearly strain hardening metal strip is studied and a closed-form solution is derived for the crushing distance of unstiffened as well as transversly stiffened box columns.
184 citations