Collision and rebounding of circular rings on rigid target

Xu, Shanqing; Ruan, Dong; Lu, Guoxing; Yu, Tongxi

doi:10.1016/j.ijimpeng.2014.07.005

Cited by 22 publications

(7 citation statements)

References 14 publications

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“…When the impact velocity was 2.13 m/s, the deformation model of the first impact of specimen ET-1 was essentially the same as that of the two impacts of specimen ET-2 (reflecting a four-phase deformation model), and the deformation trend was the same as that of specimen ET-2 as the number of impacts increased. Xu et al [ 9 ] suggest that the manifestation of the six-phase deformation model or the four-phase deformation model is primarily determined by the impact velocity; the six-phase model manifests when the impact velocity is lower than 40 m/s, and the concave four-phase deformation model occurs for velocities higher than 60 m/s. However, the six-phase model should manifest before the four-phase model.…”

Section: Analysis Of Resultsmentioning

confidence: 99%

Experimental Investigation of the Dynamic Responses of Thin-Walled and Foam-Filled Steel Tubes Subjected to Repeated Impacts

Ge,

Luo,

Qiu

2024

Materials

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In this study, a horizontal impact setup was used to measure the dynamic responses of specimens fixed on a reaction wall and subjected to repeated impacts generated by a large-tonnage impactor. The contact force, deformation process, energy absorption, and other properties of two specimens (a thin-walled steel tube and foam-filled steel tube) were thoroughly investigated. The results demonstrated that the thin-walled tube’s properties were consistent with the four-phase and six-phase deformation models and that the foam-filled tube’s properties were consistent with the two-phase deformation model. In the early stages of the experiment, the foam-filled and thin-walled tubes were similar in terms of the contact force and energy absorption. However, when the polyurethane (PU) strain reached 0.8, the PU significantly increased the support of the tubes, reduced the contact force (by extending the contact time), and increased the energy absorption capacity by 33.6–43.5%. The crush curves of the specimens were in agreement for cases involving multiple impacts, as well as for one impact with the same impact of kinetic energy. The crush curves can be used to assess the actual performance of crashworthy devices. Furthermore, after repeated impacts, the foam-filled tube exhibited a pseudo-shakedown behavior.

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Section: Analysis Of Resultsmentioning

confidence: 99%

Experimental Investigation of the Dynamic Responses of Thin-Walled and Foam-Filled Steel Tubes Subjected to Repeated Impacts

Ge,

Luo,

Qiu

2024

Materials

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“…The behaviour of a circular tube under dynamic lateral loading was studied by [128], [130], [131]. Under impact loading, the impact velocity is the dominant factor of the collapse pattern while tube dimensions have an insignificant effect on the deformation pattern [131]. In general, no change in the deformation mode or energy absorption capability was reported for tube crushed under low impact velocity [130].…”

Section: Circular Tubementioning

confidence: 99%

On the crashworthiness performance of thin-walled energy absorbers: Recent advances and future developments

Baroutaji

Sajjia

Olabi

2017

Thin-Walled Structures

524

135

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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.\ud \ud 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.\ud \ud 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.\ud \ud 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.\ud \ud 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

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“…Experimental investigations and modelling the effects of such "soft" impact are still in progress (e.g. Xu et al 2015). To the best of our knowledge, accurate mathematical models of "soft" impact effects and interaction of large "soft" projectiles with targets of different mechanical nature are still to be developed.…”

Section: Probabilities Of Damage From a Blevementioning

confidence: 99%

The Risk to Structures Built Near Roads and Rails Used for Moving Hazardous Materials

Vaidogas

Kisežauskienė

Girnienė

2016

Journal of Civil Engineering and Management

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An assessment of parts of transportation infrastructure in terms of hazards to roadside territory is considered. It is suggested to assess individual segments of road and railway network by estimating risks posed by potential fires and explosions on road and rail. Boiling liquid expanding vapour explosion of tanker trucks and tank cars is identified as the most hazardous and likely high consequence accident in the land transport. It is proposed to express the risk to built roadside objects by means of an annual damage frequency. This frequency is considered to be a specific physical characteristic of the road or railway segment under analysis. It is shown that estimating the damage frequency requires assessing effects of a potential explosion on road or rail and developing a fragility function for the roadside object analysed as a potential target. An example case study is presented. It considers a potential thermal damage to a reservoir (stationary tank) built in the vicinity of a highway. The damage can be caused by an explosion of a propane tanker truck. Results of the risk assessment are expressed in terms of probabilities of specific damage events.

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Collision and rebounding of circular rings on rigid target

Cited by 22 publications

References 14 publications

Experimental Investigation of the Dynamic Responses of Thin-Walled and Foam-Filled Steel Tubes Subjected to Repeated Impacts

Experimental Investigation of the Dynamic Responses of Thin-Walled and Foam-Filled Steel Tubes Subjected to Repeated Impacts

On the crashworthiness performance of thin-walled energy absorbers: Recent advances and future developments

The Risk to Structures Built Near Roads and Rails Used for Moving Hazardous Materials

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