含能材料2025，Vol.33Issue(10)：1155-1164,10.DOI:10.11943/CJEM2025164
炸药造型粉双向动态压制过程的数值模拟
Numerical Simulation of the Bidirectional Dynamic Compression Process of Explosive Powder
骆劲 1汤林静 1焦旭英 1李逸凡 1贾宪振1
作者信息
- 1. 西安近代化学研究所,陕西 西安 710065
- 折叠
摘要
Abstract
To investigate the deformation behavior of explosive powder during bidirectional compression,as well as the pressure and density distribution laws of the explosive column,a random packing model considering the molding powder size distribu-tion of the powder was established using ANSYS APDL parametric design language.Based on the finite element method of contin-uum mechanics,the dynamic bidirectional compression process of the powder was simulated and calculated.The results show that the model exhibits a good simulation effect on the bidirectional compression process of the powder,with the maximum er-ror between the experimental and simulation results under various specific pressures being only 2.044%.The relative density of bidirectional compression is higher than that of unidirectional compression,and the improvement in the low-pressure region is more significant.The axial pressure and density distribution of the explosive column are characterized by being larger at both ends and smaller in the middle,while the radial distribution shows smaller values on both sides and larger in the middle.Since the radial pressure difference is≤6 MPa,while 66%of the axial pressure differences exceed 6 MPa(with a maximum of 26.8 MPa),the radial density distribution can generally be neglected.During compression,the powder mainly undergoes defor-mation along the axial direction,with molding powder rotating and transforming from regular to irregular shapes.The parts in contact with the punches and mold are flat,and there are basically no gaps between molding powder.关键词
造型粉/随机填充/双向压制/压力分布/数值模拟Key words
molding powder/random packing/bidirection compression/pressure distribution/numerical simulation分类
武器工业引用本文复制引用
骆劲,汤林静,焦旭英,李逸凡,贾宪振..炸药造型粉双向动态压制过程的数值模拟[J].含能材料,2025,33(10):1155-1164,10.
