Failure analysis of UHPFRC panels subjected to aircraft engine model impact

Thai, Duc‐Kien; Kim, Seung Eock

doi:10.1016/j.engfailanal.2015.07.005

Cited by 23 publications

(3 citation statements)

References 8 publications

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“…Additionally, the steel rebar is utilized in the test and modeled by MAT_PLASTIC_KINEMATIC (MAT#3) in the simulation, in which the yield strength is 447.2 MPa (Thai and Kim, 2015), and the constants C = 40.4 and P = 5 adopted by Jones (2011) are used to consider the strain rate effect. The FS is determined as 0.15 by comparing with the experimental results.…”

Section: Simulation Ofmentioning

confidence: 99%

“…Generally, two numerical approaches for modeling the fiber-reinforced concrete are utilized: the macroscopic (homogeneous) approach and the mesoscopic (non-homogeneous) approach. The macroscopic approach regards the fiber-reinforced concrete as the homogeneous material without discrete fibers, and the influences of fibers are reflected by changing the matrix compressive and/or tensile strengths (Mahmud et al, 2013; Rong and Sun, 2012; Thai and Kim, 2015, 2016; Verma et al, 2016) or adjusting the parameters which control the strain-softening behavior (Mao et al, 2014; Teng et al, 2008; Wang et al, 2010). Comparably, the mesoscopic approach considers the fiber-reinforced concrete as the non-homogeneous material by establishing the concrete matrix and randomly distributed fibers separately; thus, the fiber bridging effect could be realized more explicitly and reasonably (Fang and Zhang, 2013; Xu et al, 2012; Zhang et al, Submitted).…”

Section: Numerical Simulation and Comparisonmentioning

confidence: 99%

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Ballistic limit of aircraft engine missile impact on ultra-high-performance steel-fiber-reinforced concrete panels

Zhang

et al. 2017

International Journal of Protective Structures

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The large commercial aircraft, especially its massive engines, would cause serious damage to the valuable infrastructures during accidental or deliberate aircraft collision. Ultra-high-performance steel-fiberreinforced concrete possesses prominent mechanical characteristics, which has been widely used in the constructions of protective structures to resist intensive loadings. This article aims to investigate the ballistic performance of aircraft engine missile. First, a series of reduce-scaled engine model impact test on ultra-high-performance steel-fiber-reinforced concrete panels was performed, and then the panel damage modes were assessed and the perforation limit of engine missiles was obtained. Second, using the mesoscopic modeling approach of ultra-high-performance steel-fiber-reinforced concrete, the present and existing engine missile impact tests are numerically simulated with the finite element program LS-DYNA, and the panel damage, residual velocity, and deformation of engine missile are well reproduced. Finally, a modified empirical formula for predicting the ballistic limit is proposed and validated by the simulated results of aircraft engine missile impact on ultra-high-performance steel-fiber-reinforced concrete panels with various thicknesses. The derived conclusion could provide helpful reference for the design and impact resistance evaluation of protective structures.

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Section: Simulation Ofmentioning

confidence: 99%

Section: Numerical Simulation and Comparisonmentioning

confidence: 99%

Ballistic limit of aircraft engine missile impact on ultra-high-performance steel-fiber-reinforced concrete panels

Zhang

et al. 2017

International Journal of Protective Structures

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“…As a result of simulation analysis, it is found that Winfrith model can better simulate nonlinear response of concrete in case of large deformation and higher strain rate than CSCM model. Using LS-DYNA, a commercially available software program, Thai and Kim [25] evaluated the punching ability of aircraft engines impact ultra-high-performance fiberreinforced concrete (UHPFRC) panels. In their study, the material model of Winfrith (MAT #084), elastic plastic (MAT #003) and piecewise linear isotropic plasticity (MAT #024) in LS-DYNA were used for the concrete panel, steel rebar and aircraft engine, respectively.…”

Section: Introductionmentioning

confidence: 99%

Failure analysis of semi-infinite concrete targets subjected to tubular projectiles impact

Wang

Yuan

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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Improving the penetration efficiency of missiles into concrete is a practical research topic. In this paper, a tubular projectile was designed to enhance penetration diameter on concrete targets. To validate numerical simulation methods, an experiment of an ogive-nosed projectile penetrating a semi-infinite concrete target was reproduced by numerical simulation. Based on the validated numerical model, the penetration progress of a tubular projectile into a semi-infinite concrete target was analyzed. By assessing the penetration tunnel diameter and depth, the effects of key parameters, i.e., the wall thickness (15.0, 30.0, 60.0, 90.0, 120.0 mm) and velocity (400.0, 600.0, 800.0, 1000.0, 1200.0, 1400.0 m/s) of tubular projectile on penetrating concrete targets have been investigated in detail. Furthermore, the penetration performances of flat-nosed projectiles and tubular projectiles on concrete targets with the same mass were compared. The results indicate that with the increase in the wall thickness and velocity of the tubular projectiles, the penetration depth of the projectiles into the concrete target increases gradually, and the increase in the diameter of the tunnel is not obvious. In the case of the wall thickness of the tubular projectile which is greater than or equal to 30.0 mm, the concrete core, near the head of the tubular projectile, is completely fractured and separated from the concrete target. When the flat-nosed projectiles have the same mass and length with tubular projectiles, the diameter of the tunnel caused by the tubular projectile on the concrete targets is always much larger than that caused by the flat-nosed projectiles. The difference of them can be 60.5%. In the condition that the flat-nosed projectiles have the same mass and diameter with tubular projectiles, the depth of the tunnels caused by tubular projectiles in the concrete targets is always much larger than that caused by flat-nosed projectiles. The difference of them can be 95.6%.

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Damage assessment of reinforced concrete columns retrofitted by steel jacket under blast loading

Thai

Pham

Nguyen

2019

Structural Design Tall Build

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SummaryIn this study, the damage to a reinforced concrete column retrofitted by steel jacket subjected to blast loading was investigated. Actually, this research is an extensive study of the previous works of the authors. Therefore, some of finite element modeling and validation procedure were adopted. Extensively, the effect of the steel jacket used for retrofitting the reinforced concrete column was evaluated. The effects of scaled distance, axial compressive force, and steel cover plate thickness on the structural performance of the column were investigated and discussed. Moreover, the residual strengths of the column with respect to the different scaled distances were also evaluated. Some useful discussions and recommendations, which may interest structural engineers and researchers, were presented as an important outcome of this research.

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Failure analysis of UHPFRC panels subjected to aircraft engine model impact

Cited by 23 publications

References 8 publications

Ballistic limit of aircraft engine missile impact on ultra-high-performance steel-fiber-reinforced concrete panels

Ballistic limit of aircraft engine missile impact on ultra-high-performance steel-fiber-reinforced concrete panels

Failure analysis of semi-infinite concrete targets subjected to tubular projectiles impact

Damage assessment of reinforced concrete columns retrofitted by steel jacket under blast loading

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