固体火箭技术2024，Vol.47Issue(3)：405-410,6.DOI:10.7673/j.issn.1006-2793.2024.03.014
含能粉体材料声共振混合过程及机理研究
Process and mechanism of energetic powders by resonant acoustic mixing
陆志猛 1胡期伟 1李洪旭 1郭翔1
作者信息
- 1. 航天化学动力技术重点实验室,襄阳 441003||湖北航天化学技术研究所,襄阳 441003
- 折叠
摘要
Abstract
Energetic powder materials are sensitive in the process of mixing,which requires high intrinsic safety of the mixing device.The resonant acoustic mixing(RAM)features rapid fluidization and homogeneous,efficient,and safe mixing,but the solid-solid particle mixing mechanism is still unclear.Aiming at the problem of solid-solid particle interaction in the process of acoustic resonance mixing of energetic powder materials,the particle flow mechanism under the action of force field and the microfluidic effect under the action of sound field were analyzed.The Hertz-Mindlin(no slip)model based on the discrete element simulation(EDEM)was used to simulate and analyze the motion state and energy state of KNO3 and B powder with 15%filling rate under dif-ferent vertical accelerations,and the corresponding orthogonal experiment was designed to verify the application.The results show that the average force between particles and the average energy of a single particle are positively correlated with the particle size,which is consistent with the theoretical derivation results that the smaller the particle diameter is,the greater the acoustic radiation force and the micro-flow field force are in a certain size range.The results of orthogonal experiment verify that the RAM ignition charge has better product performance and nearly five times the mixing efficiency than the traditional mixed equipment.关键词
声共振混合/含能粉体材料/混合机理/点火药Key words
resonant acoustic mixing/energetic powders/mixing mechanism/ignition powder分类
航空航天引用本文复制引用
陆志猛,胡期伟,李洪旭,郭翔..含能粉体材料声共振混合过程及机理研究[J].固体火箭技术,2024,47(3):405-410,6.
