Failure mechanism of reinforced concrete subjected to projectile impact loading

Xu, Xiangzhao; Ma, Tianbao; Ning, Jianguo

doi:10.1016/j.engfailanal.2018.11.006

Cited by 37 publications

(8 citation statements)

References 22 publications

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“…This may attribute to that the empirical solution is based on the CEA-EDF formula for concrete [20,21,30], see Ref. [26], which does not reflect what has been proved experimentally that increasing f c to double or even more did not increase the PL of the concrete target by more than 10% [1,19,56,57]. By examining the CEA-EDF formula for concrete (Eq.…”

Section: Panels With Rear Steel Platesmentioning

confidence: 98%

Perforation Limit of Steel-Concrete-Steel Barriers Resisting Impact

Abdel‐Kader¹

2022

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Introducing a numerical modelling and formulae to predict ballistic limit (perforation velocity or perforation limit) of concrete barriers strengthened with steel plates and subjected to rigid projectile impact was the aim of this study. A formula to predict the perforation limit of front steel-concrete (S-C) target is proposed. A formula to predict the perforation limit of steel-concrete-steel (S-C-S) target is also proposed which reflects the significant effect of the rear steel liner. The results, being in good agreement with the experiment, have showed that the interaction between the concrete panel and the front steel liner (even with full bond assumption) has little effect on the perforation limit of the S-C target. In design of protective structures and regarding the percentage increase in perforation limit over reinforcement ratio of steel plates, the concrete-rear steel (C-S) target gives better result from the economic perspective than the S-C-S target. It is recommended to modify the power of compressive strength of concrete f c in the CEA-EDF perforation formula for concrete to avoid over-prediction of perforation limit when using high strength concrete. This modification may extend to other perforation formulae for concrete.

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Section: Panels With Rear Steel Platesmentioning

confidence: 98%

Perforation Limit of Steel-Concrete-Steel Barriers Resisting Impact

Abdel‐Kader¹

2022

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“…In punching shear of concrete slabs, the shape similar to a semi‐truncated cone is also observed 13,26 . Thus, the punching plug shape is often simplified into a half‐truncated cone 4,5,8 . The advantage of this simplification is that the analytic solution could be obtained, meanwhile it is suitable for engineering applications.…”

Section: Semiempirical Equationsmentioning

confidence: 99%

“…For perforation, besides the initial crater and the stable penetration tunnel, the punching plug is another key stage to judge the antipenetration ability. Currently, there exists several typical analytical methods: punching theory by Yankelevsky, 3 and shear plug model by Chen and Li, 4,5 and mean resistance approach by Peng, 6,7 and energy dissipation mechanism by Xu 8 . For a certain thick target, the definition of ballistic limit for these methods is identical: when penetration depth reaches to a value, accompanying that the penetration velocity is close to zero, the projectile axial resistance force

F_{r}

is equal to p forming the punching plug, the corresponding initial striking velocity is defined as ballistic limit.…”

Section: Introductionmentioning

confidence: 99%

“…Recently Xu 8 adopted the principles of energy conservation and minimum potential energy to study failure mechanism of reinforced concrete subjected to projectile impact, where the similar failure criterion with Chen 4 was used, and the effect of concrete fragments resisting projectile movement was neglected, which was one of the assumptions to derive the analytic model.…”

Section: Introductionmentioning

confidence: 99%

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Study on the perforation process of concrete targets against the impact by nondeforming projectiles

Wang

et al. 2022

Structural Concrete

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The perforation of concrete‐like material targets against impact by nondeforming projectiles is always the research focus in engineering protective domain. In the present paper, a new punching plug model is proposed based on the similar features with punching shear in concrete slabs, utilizing the failure criterion of modified Mohr‐Coulomb. Semi‐empirical equations corresponding to ballistic limit, residual velocity, punching plug thickness are derived, where residual velocity is renewedly identified considering the effect of punching plug resistance. Eventually, the proposed punching plug model is validated and discussed by comparisons with perforation experiments.

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“…When the experimental studies about impact effect in the literature are investigated, it is seen that researchers have developed drop test setups most often (Al-Rousan et al, 2017;Anil & Yilmaz, 2015;Chakradhara et al, 2011;Erdem, 2014;Erdem et al, 2015;Hrynyk & Vecchio, 2014;Othman & Marzouk, 2016;Tai & Tang, 2006;Xiao et al, 2017;Xu et al, 2019;Zineddin & Krauthammer, 2007). Test devices are also used to measure dynamic effects during impact tests as well as the test setup in these studies.…”

Section: Introductionmentioning

confidence: 99%

Dynamic responses of reinforced concrete slabs under sudden impact loading

Erdem

2021

rdlc

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Reinforced concrete (RC) slabs may be subjected to low-velocity impact effect in their service lives. In this study, it is aimed to investigate dynamic responses of two-way rc slabs. So, a total of 6 slabs with 500x500, 550x550 and 600x600 mm side lengths and having same thickness are both experimentally and numerically investigated under low velocity impact loading. Two different reinforcement configurations are used in the production of each slab. A drop test setup is designed for the experimental study. Besides, measurement devices such as accelerometer, lvdt, dynamic load cell, data logger and optic photocells are used in the experimental program. Experiments on the specimens are carried out for the same level of impact energy. Acceleration, displacement and impact load values of slabs are presented by time dependent graphs. In addition, cracks and deformations are observed during tests. In the numerical part of this study, a detailed finite element procedure where explicit dynamic analysis is performed by Abaqus finite elements software is established. The simulations are performed for each test specimen under impact effect and analysis results are used in the verification of experimental results. The relationship between experimental and numerical studies is comparatively examined in terms of crack patterns and average ratios of accelerations, displacements, impact loads. Finally, it is considered that the proposed numerical model could be used in the evaluation of experimental results under impact loading.

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Failure mechanism of reinforced concrete subjected to projectile impact loading

Cited by 37 publications

References 22 publications

Perforation Limit of Steel-Concrete-Steel Barriers Resisting Impact

Perforation Limit of Steel-Concrete-Steel Barriers Resisting Impact

Study on the perforation process of concrete targets against the impact by nondeforming projectiles

Dynamic responses of reinforced concrete slabs under sudden impact loading

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