Numerical investigation on steel fibre reinforced cementitious composite panels subjected to high velocity impact loading

Prakash, Amar; Srinivasan, Sivakumar M.; Rao, A. Rama Mohan

doi:10.1016/j.matdes.2015.06.001

Cited by 22 publications

(6 citation statements)

References 20 publications

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“…the bond mechanisms between steel fibre and matrix [8,[15][16][17]. Based on the results, it is concluded that the mechanical deformation of fibres and matrix strength play a major role on pull-out response.…”

Section: Numerous Experimental and Analytical Investigations Have Beementioning

confidence: 92%

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Analysis and modelling of mechanical anchorage of 4D/5D hooked end steel fibres

2016

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This paper represents an analytical model to predict the influence of the fibre geometry on the pull-out behaviour of various geometrical hooked end steel fibres. The model is established based on the concept of a frictional pulley along with two, three and four plastic hinges to simulate the mechanical anchorage effect provided by the hook. The mechanical contribution of the hook is a function of the cold work needed to straighten the fibre during the pull-out. The input parameters used in this model are directly related to geometrical and mechanical properties of each fibre. Model predictions are validated against experimental results for single fibre pull-out tests, and very good agreement is shown.

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Section: Numerous Experimental and Analytical Investigations Have Beementioning

confidence: 92%

“…Brittle materials such as concrete and mortar are well known for their low ability to resist tensile stresses and crack propagation [1,2]. The incorporation of randomly distributed steel fibres to a cementitious matrix could significantly improve their tensile behaviour, ductility, impact resistance and crack resistance [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Analysis and modelling of mechanical anchorage of 4D/5D hooked end steel fibres

2016

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“…Based on the HJC model, Riedel et al [32] developed RHT model. The constitutive model can describe the characteristics of the concrete material behavior at a high strain rate, and has been widely employed by researchers to simulate the dynamic response of concrete-like materials under impact or blast loading [18,25,33,34]. The main parameters for the concrete RHT model are shown in Table 1.…”

Section: Concretementioning

confidence: 99%

“…Just for the penetration processes, many researchers have carried out considerable research on the impact theory [15], experimental tests [16,17] and numerical simulations [18]. It should be noted that the aforementioned research objectives are mainly focused on concrete slabs or blocks.…”

Section: Introductionmentioning

confidence: 99%

Combined effects of penetration and explosion on damage characteristics of a mass concrete target

Yang¹,

Wang²,

Lu³

et al. 2018

J. vibroeng.

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Abstract. With the development of the precision guidance technology, the earth-penetrating weapon (EPW) is a huge threat to infrastructures. The objective of this research is to investigate the damage characteristics of mass concrete targets under the combined action of penetration and explosion. The validity of the penetration model is discussed by reproducing a previous experimental test reported in the literature. Meanwhile, a field test about the internal explosion in a concrete cube is conducted to verify the validity of the internal explosion model. Subsequently, damage characteristics of a mass concrete target from the upper part of a concrete gravity dam are discussed when subjected to the combined action of the penetration and explosion. In order to improve the structural performance of the mass concrete target to penetration and explosion loadings, high strength concrete material is selected as a preventive measure. Penetration processes and damage patterns of the mass target with normal and high strength concrete material are compared. Then, three internal explosion models are presented to investigate the influence of the initial penetration damage on the failure characteristics of the mass concrete target. The results show that the resistance of the mass target to the combined action of the penetration and explosion can be enhanced significantly by using the high strength concrete material. The initial penetration damage has a significant influence on the damage processes of the mass concrete target subjected to internal blast loading.

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“…Some numerical models were presented and verified as able to represent the behavior of cracked steel fiber reinforced concrete (SFRC) [ 30 , 31 ]. The addition of steel fibers can significantly limit the shrinkage and cracking of concrete, increase the toughness and tensile yield strength of concrete, and improve the plastic shrinkage performance, impermeability, frost resistance, and dynamic load performances (impact resistance and fatigue) of concrete [ 32 , 33 , 34 , 35 ]. In addition, SFRCC can be easily prepared and it is suitable for a variety of working conditions.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Evaluation on the Performance of Perfobond Leiste Shear Connectors in Steel–SFRCC Composite Beams

Peng

Liu

et al. 2022

Materials

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The difference between the shear performances of Perfobond Leiste (PBL) shear connectors embedded in steel fiber-reinforced cementitious composite (SFRCC) structure and normal strength concrete (NC) structure was investigated by push-out tests and finite element (FE) simulations. Push-out tests were carried out on nine steel-SFRCC specimens and nine steel-NC specimens. The mechanical behavior of the PBL shear connector was examined according to the failure modes, load-slip curves, and strain distribution laws of the push-out specimens. Experimental results revealed that the extension of cracks in SFRCC was hindered by steel fibers, and the number and width of cracks in SFRCC were smaller than those in NC. The failure mode of the steel-SFRCC specimens and the single-hole steel-NC specimens was the shear failure of the penetrating reinforcement, whereas that of the multi-hole NC specimens was concrete slab cracking. The ultimate shear bearing capacity of PBL shear connectors in the steel-SFRCC specimens was 47.8% greater than that in the steel-NC specimens. Furthermore, an FE model verified by the test results was established to conduct parametric analyses. It was found that the hole diameter and thickness of the steel plate and the yield strength of the penetrating rebar greatly affected the shear bearing capacity of PBL shear connectors. Finally, based on the experimental and FE simulation results, an expression for calculating the ultimate shear bearing capacity of PBL shear connectors in the steel-SFRCC composite structure was developed by considering the bearing effects of concrete dowels, penetrating rebars, and end parts.

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Numerical investigation on steel fibre reinforced cementitious composite panels subjected to high velocity impact loading

Cited by 22 publications

References 20 publications

Analysis and modelling of mechanical anchorage of 4D/5D hooked end steel fibres

Analysis and modelling of mechanical anchorage of 4D/5D hooked end steel fibres

Combined effects of penetration and explosion on damage characteristics of a mass concrete target

Experimental and Numerical Evaluation on the Performance of Perfobond Leiste Shear Connectors in Steel–SFRCC Composite Beams

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