A special numerical method for fluid-structure interaction problems subjected to explosion and impact loading

Ning, Jianguo; Meng, Fanzhong; Ma, Tianbao; Xu, Xiangzhao

doi:10.1007/s11431-019-1519-9

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…The mechanical behavior of the composite steel structure under explosion load involves large deformation and failure of material. The EXPLOSION-3D software was developed independently by our research group [ 2 , 28 , 30 , 31 ]. This software is a three-dimensional multi-material Eulerian engineering simulation software using the finite difference method.…”

Section: Methodsmentioning

confidence: 99%

Experimental and Numerical Study on the Mechanical Behavior of Composite Steel Structure under Explosion Load

Zheng

2021

Materials

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Most engineering structures are composed of basic components such as plates, shells, and beams, and their dynamic characteristics under explosion load determine the impact resistance of the structure. In this paper, a three-dimensional composite steel structure was designed using a beam, plate, and other basic elements to study its mechanical behavior under explosion load. Subsequently, experiments on the composite steel structure under explosion load were carried out to study its mechanical behavior, and the failure mode and deformation data of the composite steel structure were obtained, which provided important experimental data regarding the dynamic response and mechanical behavior of the composite steel structure under explosion load. Then, we independently developed a parallel program with the coupled calculation method to solve the numerical simulation of the dynamic response and failure process of the composite steel structure under explosion load. This program adopts the Euler method as a whole, and Lagrange particles are used for materials that need to be accurately tracked. The numerical calculation results are in good agreement with the experimental data, indicating that the developed parallel program can effectively deal with the large deformation problems of multi-medium materials and the numerical simulation of the complex engineering structure failures subjected to the strong impact load.

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Section: Methodsmentioning

confidence: 99%

Experimental and Numerical Study on the Mechanical Behavior of Composite Steel Structure under Explosion Load

Zheng

2021

Materials

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“…e MAT_JOHNSON_COOK elastoplastic model and EOS_GRUNEISEN state equation were used to describe the strength limit and failure process of metal materials under conditions of large deformation, high strain rate, and high temperature for the casing of precisionguided earth penetrator; for built-in charging, the MAT_HIGH_HOMVE_BURN constitutive model and the EOS_JWL state equation were used for description. Relevant parameters for cartridge and charging materials are given in Tables 2 and 3 [34][35][36][37].…”

Section: Materials Modelsmentioning

confidence: 99%

Numerical Simulation of Damping Performance of Elastically Supported Underground Arch Structures Subject to Penetration and Explosion

Yuan

Sun

Zhuo

et al. 2022

Advances in Civil Engineering

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To reduce the damage of earth penetrators on underground fortifications against blast and fragmentation penetration, a model of underground arch structure with elastic support was established for a modal analysis on the structure subject to penetration and explosion with ANSYS/LS-DYNA software for dynamic analysis. In the process, the effect of spring stiffness coefficient on the dynamic response of the structure was analyzed in terms of pressure, equivalent stress, and peak vertical displacement. The simulation results showed that the elastic support reduced the dynamic response of the structure, while the equivalent stress and pressure of each part of the underground arch structure were reduced, and the peak vertical displacement was increased as the stiffness coefficient of the elastic support was lowered, and the isolation efficiency of equivalent stress and pressure at the arch shoulder was lower than that at other parts. Therefore, reducing the stiffness coefficient of the elastic support alone cannot meet the need for vibration isolation of the arch shoulder, and the type or stiffness coefficient of elastic support should be selected reasonably according to the actual engineering requirements, so as to achieve a good vibration isolation effect.

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Numerical investigation on failure behavior of steel plate under explosive loading

Zheng

Wang

2021

Sci. China Technol. Sci.

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A special numerical method for fluid-structure interaction problems subjected to explosion and impact loading

Cited by 6 publications

References 32 publications

Experimental and Numerical Study on the Mechanical Behavior of Composite Steel Structure under Explosion Load

Experimental and Numerical Study on the Mechanical Behavior of Composite Steel Structure under Explosion Load

Numerical Simulation of Damping Performance of Elastically Supported Underground Arch Structures Subject to Penetration and Explosion

Numerical investigation on failure behavior of steel plate under explosive loading

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