Numerical study on explosion-induced fractures of reinforced concrete structure by beam-particle model

Liu, Jun; Zhao, Changbing; Yun, Bin

doi:10.1007/s11431-010-4223-x

Cited by 7 publications

(4 citation statements)

References 19 publications

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“…Mesh Generation Algorithm for Single Particle. For a single particle, the algorithm in the literature [31] is used for mesh generation.…”

Section: Mesh Generation Algorithm For Particle Failure Simulationmentioning

confidence: 99%

“…In summary, based on the existing discrete element method theory [25][26][27][28][29][30], and using the three-dimensional block element beam-particle model [31], particle failure simulation mesh generation algorithm [32], and three-dimensional block element contact detection algorithm, the simulation program of granular material flow and fracture is developed.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation Study on Flow and Fracture of Granular Materials

Liu

et al. 2019

Mathematical Problems in Engineering

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Flow and fracture of granular materials under external loads is a complex mechanical process, and the research on its law is still in the exploratory stage. In this paper, the flow and fracture law of granular materials is taken as the research object, and numerical algorithm compilation and program development are combined to study. Taking full advantage of the existing algorithms and developing new ones based on the existing DEM theory, a numerical simulation program for the flow and fracture of granular materials is developed. The flow and fracture process of concrete spherical granular system with diameter of 4 cm under loading rate of 70 mm/min and end of loading of 50 kN is taken as an example to verify the simulation program. At the same time, the loading experiment of the concrete spherical particle system under the same simulation conditions was also carried out. The simulation results are compared with the experimental results in three aspects: the generation location of the particle system, the relationship between the whole load and displacement, and the degree of particle breakage. The results show that the numerical simulation is in good agreement with the experimental results, which verifies the reliability of the numerical algorithm and the simulation program, and can provide support for the study of the flow and fracture process of granular materials.

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“…Mesh Generation Algorithm for Single Particle. For a single particle, the algorithm in the literature [31] is used for mesh generation.…”

Section: Mesh Generation Algorithm For Particle Failure Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Study on Flow and Fracture of Granular Materials

Liu

et al. 2019

Mathematical Problems in Engineering

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“…Besides the multiple arch-cantilever method requested by the dam design codes, many modern numerical methods and tests are developed to obtain more realistic stresses and displacements for static [93][94][95][96][97][98] and dynamic [99][100][101][102][103][104] analysis of dam. With these methods and tests, the location and area as well as the extent of cracking, crushing and shear failure can be figured out.…”

Section: Safety Analysis Of Local Strength Failurementioning

confidence: 99%

Research advance in failure risk and local strength failure for high arch dams

Ren

Liu

2012

Chin. Sci. Bull.

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To develop national economy and use the water resources and hydropower resources sufficiently, a lot of high arch dams, with the height of more than 200 m, have been and will be built in China. Although arch dams have good mechanical behavior, there is still failure possibility due to the huge water pressure and high stress level in dam, complex topographic and geologic conditions, formidable environment and high intensity earthquake. As one of the three main aspects concerning the safety of high arch dam, the study on global destruction, has been elaborated in the literatures, and research advance in the other two aspects, namely the failure risk and local damage of high arch dams, will be reviewed in this paper. In recent years, the failure risk of high arch dams has been investigated, and the model for identifying dam failure risk factors has been established. It is shown that the foundation deterioration and strong earthquake are the major risk sources for high dam failure. With the fault tree method, the failure mode and failure probability of high arch dams are studied, and the principle for determining failure mode and the method of calculating failure probability are proposed. Meanwhile, the determination principle of acceptable risk standard for high arch dam was proposed, and the acceptable risk rate and the acceptable standard value of various risk losses were given. For the local damage of arch dam, it is pointed out that the local damage belongs to the strength failure at material level. The study on local failure mechanism of arch dam is reviewed, based on the theories that from traditional strength theory to damage mechanics and meso-mechanics theory. Aiming at the cracking, the main pattern of local failure of high concrete dam, the research advances in the analysis methods and cracking criteria for smeared crack model and discrete crack model are summarized, and the research findings of preventive measures for local failure are shown. high arch dam, failure risk, local damage, research advance Citation:Ren Q W, Li Q, Liu S. Research advance in failure risk and local strength failure for high arch dams. Chin Sci Bull, 2012Bull, , 57: 46724682, doi: 10.1007 To develop national economy, to save energy and to reduce emission, exploitation and utilization of water resources and hydropower resources are continued in China. At present, the height of arch dams under construction and to be built are of 300 m high level, such as Jinping arch dam (305 m high), Xiaowan arch dam (294.5 m high), Xiluodu arch dam (285.5 m high), and Baihetan arch dam (289 m high). The construction scale and difficulty of these dams are beyond the current design specifications, and there is hardly successful precedential reference. Moreover most of these high arch dams are located in the western region of China, where the topographic and geologic conditions are quite complex, with harsh environment and high seismic intensity as well as frequent geological disasters. In addition the resistance of dam and foundation may be red...

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“…Various remedy methods (e.g., extended finite element method, virtual crack closure technique, cohesive elements, etc.) are used to deal with the discontinuous situation [1,2]. Nevertheless, numerical methods incorporated with these special techniques still suffer from the unsatisfactory simulation precision and low efficiency when handling complicated problems.…”

Section: Introductionmentioning

confidence: 99%

Damage and progressive failure of concrete structures using non-local peridynamic modeling

Huang

Zhang

Qiao

2011

Sci. China Technol. Sci.

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Peridynamics (PD), a recently developed theory of solid mechanics, which employs a non-local model of force interaction and makes use of integral formulation rather than the spatial partial differential equations used in the classical continuum mechanics theory, has shown effectiveness and promise in solving discontinuous problems at both macro and micro scales. In this paper, the peridynamics theory is used to analyze damage and progressive failure of concrete structures. A non-local peridynamic model for a rectangular concrete plate is developed, and a central pairwise force function is introduced to describe the interior interactions between particles within some definite distance. Damage initiation, evolution and crack propagation in the concrete model subject to in-plane uni-axial tension, in-plane uni-axial compression and out-of-plane impact load are investigated respectively. The numerical results show that discontinuities appear and grow spontaneously as part of the solution to the peridynamic equations of motion, and no special failure criteria or re-meshing techniques are required, which proves the potential of peridynamic modeling as a promising technique for analyzing the progressive failure of concrete materials and structures.concrete, damage, progressive failure, peridynamic model, discontinuities Citation:Huang D, Zhang Q, Qiao P Z. Damage and progressive failure of concrete structures using non-local peridynamic modeling. Sci China Tech Sci, 2011, 54: 591596,

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Numerical study on explosion-induced fractures of reinforced concrete structure by beam-particle model

Cited by 7 publications

References 19 publications

Numerical Simulation Study on Flow and Fracture of Granular Materials

Numerical Simulation Study on Flow and Fracture of Granular Materials

Research advance in failure risk and local strength failure for high arch dams

Damage and progressive failure of concrete structures using non-local peridynamic modeling

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