可燃药筒孔结构的分形维数研究  

Fractal Dimension of Pore Structure of Combustible Cartridge Cases

作　　者：肖乐勤[1] 李煜[1] 左海丽[1] 邹伟伟[1] 李宁[1] 郭德惠 周伟良[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094 [2]西安北方惠安化学有限公司,陕西西安710302

出　　处：《兵工学报》2011年第5期569-573,共5页Acta Armamentarii

基　　金：火炸药青年基金项目(HYZ08010202-4);南京理工大学研究生创新基金项目(2007030001)

摘　　要：运用分形几何理论构造可燃药筒孔结构模型,以压汞法(MIP)测试4种配方可燃药筒的孔结构,获得可燃药筒的孔结构基体分维、孔隙分维等数据。分析讨论了可燃药筒孔结构分形的形成机理,并结合力学性能实验,研究孔结构分形维数与力学性能的关系。结果表明:可燃药筒基体分维由组分间隙形成,组分数量与各组分尺寸大小决定了基体分维大小;孔隙分维反映了各组分本身的孔隙结构;孔结构分形维数与可燃药筒材料拉伸强度变化正相关,即分维减小,拉伸强度下降。A fractal pore structure model of combustible cartridge case was established by virtue of the fractal geometry.Pore structure information,such as backbone fractal dimension and percolation fractal dimension,of four kinds of combustible cartridge were obtained by mercury intrusion porosimetry（MIP） test.The formation mechanism of fractal pore structure of combustible cartridge was studied with mechanical properties.The results show that the backbone fractal dimension is formed of the space of component and influenced by the number and size of components;the percolation fractal dimension reflects the pore structure of components themselves;and the fractal dimension of pore structure is positively related to the tensile strength of combustible cartridge.

关 键 词：物理化学 可燃药筒 孔结构 分形维数 孔隙率 

分 类 号：TJ012.14[兵器科学与技术—兵器发射理论与技术]