Numerical Simulation Analysis of Impact Resistance of Neutron Source Packaging Containers

LIU Ting; ZHANG Guangliang; ZHAO Xiaoxin; ZHU Jialei; SU Yukun; XU Yuxin

doi:10.19554/j.cnki.1001-3563.2025.17.036

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Packaging Engineering ›› 2025, Vol. 46 ›› Issue (17) : 342-350. DOI: 10.19554/j.cnki.1001-3563.2025.17.036

Equipment Protection

Numerical Simulation Analysis of Impact Resistance of Neutron Source Packaging Containers

LIU Ting, ZHANG Guangliang, ZHAO Xiaoxin^*, ZHU Jialei, SU Yukun, XU Yuxin

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Abstract

With Type A radioactive containers as the subject, the work aims to combine container impact test with simulated impact models to validate the performance reliability of the container and finally establish an efficient analysis method that mutually corroborates experimental and simulation results, providing precise and reliable basis for the safe design and performance evaluation of Type A radioactive containers. Based on SolidWorks three-dimensional modeling software and ABAQUS finite element analysis software, the Johnson-Cook model of neutron source transport container was established, and the simulation analysis of impact resistance performance of independently-designed neutron source container was carried out to verify the feasibility of the structural design. The penetration test and container drop simulation analysis on the top surface of the radioactive container of neutron source showed that the impact of the metal bar did not produce large plastic deformation to the container, and the stress and strain values ranged from the center of the impact point to the surrounding area in the form of a circular decreasing symmetric position with similar values, and the average error rate between the actual test and the simulation was 11.6%. The deformation position and deformation displacement were extremely close to each other. The maximum deformation displacement in the actual test was about 13 mm, and the maximum displacement in the simulation model test was about 10.5 mm. In the simulation test of the container drop, the impact energy of the drop in the four cases of the bottom surface, top surface, side surface, and 45° angle was dispersed and absorbed due to the protective buffer effect of the container. The structure of the neutron source transport container is reasonably designed, and the maximum stress on the internal structure of the container as the main storage of radioactive sources is within the safe range, which will not cause the leakage of radioactive contents, and the test combined with the simulation model can more accurately predict the impact performance of the neutron source container during transportation, which can further improve the transportation efficiency.

Key words

neutron source / transport container design / impact resistance / numerical simulation

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LIU Ting, ZHANG Guangliang, ZHAO Xiaoxin, ZHU Jialei, SU Yukun, XU Yuxin. Numerical Simulation Analysis of Impact Resistance of Neutron Source Packaging Containers[J]. Packaging Engineering. 2025, 46(17): 342-350 https://doi.org/10.19554/j.cnki.1001-3563.2025.17.036

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