Study on compression
performance of helium cooled ceramic breeder blanket pebble bed based on discrete
element method

doi:10.16568/j.0254-6086.202203005

Nuclear Fusion and Plasma Physics ›› 2022, Vol. 42 ›› Issue (3): 295-300.DOI: 10.16568/j.0254-6086.202203005

• Nuclear Fusion Engineering • Previous Articles Next Articles

Study on compression performance of helium cooled ceramic breeder blanket pebble bed based on discrete element method

WANG Kai-song¹, YANG Hao¹, WANG Jian^{2, 3}, LEI Ming-zhun²

(1. School of Mechanical Engineering, Anhui University of Science and Technology, Huainan 232001;2. Institute of Plasma Physics, Chinese Academy of Science, Hefei 230031;3. University of science and technology of China, Hefei 230031)

Received:2020-09-29 Revised:2021-11-22 Online:2022-09-15 Published:2022-09-21

基于离散元方法的氦冷陶瓷增殖包层球床压缩性能研究

王开松¹，杨皓¹，汪键^{2, 3}，雷明准²

(1. 安徽理工大学机械工程学院，淮南 232001；2. 中国科学院等离子体物理研究所，合肥 230031；3. 中国科学技术大学，合肥 230031)

作者简介:王开松(1969‒)，男，安徽肥东人，博士，教授，主要从事机械结构设计与分析工作。
基金资助:
中国科学院合肥大科学中心协同创新培育基金项目(2019HSC-CIP006)

Abstract

Abstract:

Based on the open source discrete element software LIGGGHTS-PUBLIC, the uniaxial compression tests were simulated on Li₄SiO₄ pebble bed with different crushing ratio to study the compression performance of the pebble bed. The results show that under the same pebble bed strain, the pebble bed stress decreases with the increase of broken particles. The crushing ratio and the restitution coefficient affect the overall strength of the pebble bed together. When the overall strain of the pebble bed is small, the average packing fraction of the pebble bed increases linearly with the increase of the strain of the pebble bed. The average coordination number of the pebble bed increases with the increase of the strain of the pebble bed, and decreases with the increase of the crushing ratio of the pebble bed.

Key words: Helium-cooled ceramic breeder blanket, Discrete element method, Compression performance, Uniaxial compression analysis, Pebble bed

摘要：

基于开源离散元软件LIGGGHTS-PUBLIC对不同破碎率的Li₄SiO₄球床进行了单轴压缩试验模拟以研究球床的压缩性能。计算结果表明，在相同的球床应变下，球床应力随着破碎颗粒数量的增大而减小。球床破碎率和恢复系数共同影响球床的整体强度。在球床应变整体较小时，球床平均填充率随球床应变的增大呈线性增大。球床平均配位数随球床应变的增大而增大，并随球床破碎率的增大而减小。

关键词: 氦冷陶瓷增殖包层, 离散元方法, 压缩性能, 单轴压缩分析, 球床

CLC Number:

TL62

WANG Kai-song, YANG Hao, WANG Jian, LEI Ming-zhun. Study on compression performance of helium cooled ceramic breeder blanket pebble bed based on discrete element method[J]. Nuclear Fusion and Plasma Physics, 2022, 42(3): 295-300.

王开松, 杨皓, 汪键, 雷明准. 基于离散元方法的氦冷陶瓷增殖包层球床压缩性能研究[J]. 核聚变与等离子体物理, 2022, 42(3): 295-300.

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Study on compression performance of helium cooled ceramic breeder blanket pebble bed based on discrete element method

基于离散元方法的氦冷陶瓷增殖包层球床压缩性能研究

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