Random model for radiation shielding calculation of particle reinforced metal matrix composites and its application

Weiqiang Sun; Huasi Hu; Bo Yu; Liang Sheng; Guang Hu; Yao Cai; Quanzhan Yang; Mei Zhang; Yihong Yan

doi:10.1016/j.apradiso.2020.109299

Random model for radiation shielding calculation of particle reinforced metal matrix composites and its application

Appl Radiat Isot. 2020 Dec:166:109299. doi: 10.1016/j.apradiso.2020.109299. Epub 2020 Jul 5.

Authors

Weiqiang Sun¹, Huasi Hu², Bo Yu³, Liang Sheng⁴, Guang Hu⁵, Yao Cai⁶, Quanzhan Yang³, Mei Zhang⁴, Yihong Yan¹

Affiliations

¹ School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
² School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China. Electronic address: huasi_hu@mail.xjtu.edu.cn.
³ State Key Laboratory of Light Alloy Foundry Technology for High-end Equipment Shenyang Research Institute of Foundry Co. Ltd., Shenyang, 110022, China.
⁴ State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, 710024, China.
⁵ School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China. Electronic address: guanghu@mail.xjtu.edu.cn.
⁶ China Ship Development and Design Center, Wuhan, 430064, China.

PMID: 32911439
DOI: 10.1016/j.apradiso.2020.109299

Abstract

The work aimed to calculate the radiation biological shielding performance of particle reinforced metal matrix composite (PRMMCs) using more reasonable model instead of conventional Uniform Filling Model, also attempted to provide a basis for the radiation shielding optimal design of such materials. Firstly, RSA (Random Sequential Adsorption) Model and GRM (Grid Random Model) were established based on MATLAB and Monte Carlo Particle transport program MCNP, and then advantages and disadvantages of them were compared. Later, the influences of metal matrix type, particle (B₄C) content, particle shape and particle shape parameters on the biological shielding performance of materials were calculated under different energy neutrons and different thickness shield using random models. Finally, the optimal aspect ratio of regular hexahedral B₄C was calculated by Genetic Algorithm combined with MATLAB and MCNP. It indicated that GRM could be applied to radiation shielding calculation of PRMMCs.

Keywords: MCNP Code; Optimal design; PRMMCs; Radiation shielding; Random model.