A practical calculation method of steel plate concrete walls to resist perforation from missile impact in nuclear engineering

被引:0
|
作者
Wang F. [1 ,2 ]
Liu J. [1 ]
Han P. [1 ,3 ]
Bao X. [1 ]
Wang X. [1 ]
Li S. [1 ]
机构
[1] Department of Civil Engineering, Tsinghua University, Beijing
[2] College of Defense Engineering, Army Engineering University of PLA, Nanjing
[3] State Quality (Beijing) Construction Engineering Testing & Appraisal Center, Beijing
来源
关键词
Energy method; Finite element (FE) analysis; Impact; Perforation; Steel plate concrete (SC) walls;
D O I
10.11883/bzycj-2020-0020
中图分类号
学科分类号
摘要
The calculation method based on the energy method for resisting perforation to the SC walls with tied bars was discussed. Based on the perforation mechanism of missile impacting on the SC walls, the dissipated energy was divided into four parts: the energy dissipated by the front and rear steel plates, the energy dissipated by internal concrete and tied bars, and a practical calculation formula of preventing perforation was proposed. The perforation velocity and the residual velocity of the SC walls with tied bars can be calculated by the practical calculation formula when the related parameters of the materials and geometry about the missile and SC walls are known, thus avoiding complex impacting numerical analysis of dynamic time history. In order to verify the reliability of the formula, the results calculated through the practical formula were compared with the existing test data, as well as the dynamic finite element (FE) analysis results. The perforation state of the SC walls can be judged by the practical calculation formula concretely, and the residual velocities of the missile given by the formula are in good agreement with the test results. To further verify the application extent of the formula, the FE models about 10 cases of an aircraft engine impacting on the SC walls were established, and the solid FE models and the front closed cylindrical shell FE models of the aircraft engine were described, respectively. The results calculated through the practical formula were compared with the 10 cases of the aircraft engine impacting on the SC wall. It indicates that the deviation value of one case is slightly more than 10%. In other cases, the deviation values are all less than 10%. The accuracy and effectiveness of the proposed method can be verified. © 2020, Editorial Staff of EXPLOSION AND SHOCK WAVES. All right reserved.
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