Deformation and damage of liquid-filled cylindrical shell composite structures subjected to repeated explosion loads: Experimental and numerical study

Cheng, L.; Ji, Chong; Gao, Fuyin; Yu, Yang; Long, Yuan; Zhou, Y.

doi:10.1016/j.compstruct.2019.03.083

Cited by 29 publications

(7 citation statements)

References 21 publications

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“…In our model, the explosion load inside the cylindrical shell is simplified to a spindleshaped load, as shown in Equation (6). It can be seen from Figure 2 that the explosive load of the cylindrical shell is the greatest when z = h and r = r 1 , and the stress of the cylindrical shell is the greatest at the same point.…”

Section: Contributor Equation Contributor Equationmentioning

confidence: 99%

“…The interaction between explosion products and containers is one of the topics in the research of cylindrical shells. Scholars have carried out research by means of theoretical analysis, blasting tests, and numerical simulations [5,6]. In 1958, Baker and Allen [7] first established a general response theory for spherical shells of arbitrary thickness, showing that even "thin-shell" equations of motion can accurately describe relatively thick shells.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical and Numerical Analysis of Blasting Pressure of Cylindrical Shells under Internal Explosive Loading

Chen

Wang

Sang

et al. 2021

JMSE

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Cylindrical shells are principal structural elements that are used for many purposes, such as offshore, sub-marine, and airborne structures. The nonlinear mechanics model of internal blast loading was established to predict the dynamic blast pressure of cylindrical shells. However, due to the complexity of the nonlinear mechanical model, the solution process is time-consuming. In this study, the nonlinear mechanics model of internal blast loading is linearized, and the dynamic blast pressure of cylindrical shells is solved. First, a mechanical model of cylindrical shells subjected to internal blast loading is proposed. To simplify the calculation, the internal blast loading is reduced to linearly uniform variations. Second, according to the stress function method, the dynamic blast pressure equation of cylindrical shells subjected to blast loading is derived. Third, the calculated results are compared with those of the finite element method (FEM) under different durations of dynamic pressure pulse. Finally, to reduce the errors, the dynamic blast pressure equation is further optimized. The results demonstrate that the optimized equation is in good agreement with the FEM, and is feasible to linearize the internal blast loading of cylindrical shells.

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Section: Contributor Equation Contributor Equationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theoretical and Numerical Analysis of Blasting Pressure of Cylindrical Shells under Internal Explosive Loading

Chen

Wang

Sang

et al. 2021

JMSE

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“…The overpressures acting on a structural member as a result of an explosion are commonly predicted by: (i) empirical data in design manuals (Kingery and Bulmash, 1984;U.S. Army Corps of Engineers, 1992;USACE, 2008), (ii) numerical simulations (Cheng et al, 2019;Chung Kim Yuen et al, 2018;Shin et al, 2015), or (iii) experimental data (Dunnet et al, 2006;Swisdak, 1975). The first approach is the most commonly used of these.…”

Section: Generalmentioning

confidence: 99%

“…However, even though SDOF models often provide reliable engineering-level results, they may be inappropriate to use for blastresistant design for small standoff distances, in which local deformation of the element may occur due to non-uniform loading conditions (Ballantyne et al, 2010;Sherkar et al, 2010). The second method included the simulation of the structural response using a Lagrange mesh, where initial conditions in terms of non-uniform initial velocities were applied to the nodes of the structural element, without modelling the detonation process using an Euler mesh (Cheng et al, 2019;Remennikov and Uy, 2014). The initial velocity and its highly nonuniform distribution were based on the impulse distribution, which was predicted by geometry considerations and empirical methods.…”

Section: Generalmentioning

confidence: 99%

Strong-axis response of steel I-sections subjected to close-in detonations

Grisaro

Seica

Packer

et al. 2020

International Journal of Protective Structures

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The analysis of structural members subjected to close-in detonations involves a complicated dynamic scenario. Since the charge is very close to the structural member, the reflected pressure distribution on the member surface is highly non-uniform. In addition, the level of damage to the structural member may be high because of the large magnitude of the load. Due to these phenomena, the response of a structural member to close-in detonation cannot be accurately modelled by relatively simple methods like single-degree of freedom models, and more complicated models are required. Such models need to include numerical simulation of the detonation process, which produces a non-uniform pressure environment, allowing the pressure to reflect and flow around the member section. The local damage and flow around the section are especially of interest in I-shaped, or wide-flange-section members. Herein, the response of such sections is modelled by numerical simulations using a novel technique, which overcomes the difficulty of computation time, and is validated through various calculations. The model is used to perform a parametric study to investigate the response of I-sections subjected to close-in detonations, in terms of local damage and global behaviour, with scaled distances of 0.15–0.29 m/kg1/3 and loading causing flexure about the strong axis. Various aspects that affect the performance are studied, such as: the effect of scaled distance, the addition of welded stiffening plates between the flanges and web, the effect of boundary conditions and the effect of charge shape. Resulting local damage and residual deformations are assessed for the cases studied.

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“…The failure criteria and failure pressures of metal cylindrical shells under impact loads are poorly studied, despite there being much research on the dynamic responses of metal cylindrical shells under explosive loads. Cheng et al [15] investigated the dynamic responses and structural losses of cylindrical composite structures under repeated blast loading. V Hadavi et al [16] proposed a theoretical method for calculating the maximum radial deflection of cylindrical shells under blast loading.…”

Section: Introductionmentioning

confidence: 99%

An Innovative Failure Criterion for Metal Cylindrical Shells under Explosive Loads

Wang

Chen

2022

Materials

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Metal cylindrical shells are widely used to store and transport highly hazardous chemicals. The impact resistance of metal cylindrical shells under an explosive load is a concern for researchers. In this paper, an innovative failure criterion considering the time effect is proposed for metal cylindrical shells under explosive loads. Firstly, based on the maximum shear stress criterion, an innovative failure criterion containing the time effect is provided. Then, a metal cylindrical shell model is established. Next, a failure pressure equation for metal shells under an explosive load is proposed based on the innovative failure criterion. Lastly, the proposed equation is verified by numerical simulation. The results indicate the failure pressure equation for a metal cylindrical shell under an explosive load uses the finite element method. Our research is of significance for fully understanding the failure mechanism of piping and pressure vessels under impact load.

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Deformation and damage of liquid-filled cylindrical shell composite structures subjected to repeated explosion loads: Experimental and numerical study

Cited by 29 publications

References 21 publications

Theoretical and Numerical Analysis of Blasting Pressure of Cylindrical Shells under Internal Explosive Loading

Theoretical and Numerical Analysis of Blasting Pressure of Cylindrical Shells under Internal Explosive Loading

Strong-axis response of steel I-sections subjected to close-in detonations

An Innovative Failure Criterion for Metal Cylindrical Shells under Explosive Loads

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