Numerical simulation of deformation and fracture of space protective shell structures from concrete and fiber concrete under pulse loading

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Radchenko, P.A.^1 ; Batuev, S.P.^1 ; Radchenko, A.V.^1 ; Plevkov, V.S.^1

Tomsk State University of Architecture and Building, Solyanaya Square 2, Tomsk

634003, Russia^1

关键词: Cellular structure;    Compression waves;    Deformation and fracture;    Geometric objects;    Parallel Computation;    Protective shell;    Strength property;    Stress strain state;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012048/pdf
DOI  :  10.1088/1742-6596/653/1/012048

来源: IOP

【 摘 要 】

This paper presents results of numerical simulation of interaction between aircraft Boeing 747-400 and protective shell of nuclear power plant. The shell is presented as complex multilayered cellular structure comprising layers of concrete and fiber concrete bonded with steel trusses. Numerical simulation was held three-dimensionally using the author's algorithm and software taking into account algorithms for building grids of complex geometric objects and parallel computations. The dynamics of stress-strain state and fracture of structure were studied. Destruction is described using two-stage model that allows taking into account anisotropy of elastic and strength properties of concrete and fiber concrete. It is shown that wave processes initiate destruction of shell cellular structure - cells start to destruct in unloading wave, originating after output of compression wave to the free surfaces of cells.