火炸药学报2017，Vol.40Issue(6)：78-82,5.DOI:10.14077/j.issn.1007-7812.2017.06.013
RDX基含铝炸药的剪切试验及损伤模式
Shear Experiment and Damage Mode of RDX-based Aluminized Explosive
摘要
Abstract
Using shear apparatus equipped with the split Hopkinson pressure bar (SHPB) and cutting device ,the variation rule of shear force with time and shear stress were obtained through the shear experiment on RDX -based aluminized explo-sive .Combined with industrial CT images and scanning electron microscope (SEM ) analysis ,the macro/micro damage mode under shear loading condition was discussed .The results show that under the shear action ,there are two extreme sta-ges on the axial stress-strain curves ,the first stage is that the stress rapidly increases with a little strain ,and the maximum value of this stress is about 50 -60 MPa ;the second stage is that the stress increases first and then unloads as the strain in -creases ,and shear force is 10 -37 kN in the loading process of this experiment .For small shear force specimen ,the shear band mainly concentrats on the central section of loading surface ,and for large shear force specimen ,the shear band mainly concentrats on near the shear plane .When the specimen thickness is smaller ,the damage mode mainly is micro crack of crystal and debonding of crystal and bonding agent matrix ,when the thickness of specimen increases ,the damage mode of specimen mainly is various forms of crystal .关键词
侵彻战斗部/霍普金森压杆/SHPB/剪切试验/RDX基含铝炸药/损伤模式/炸药装药Key words
penetrating warhead/split hopkinson pressure bar/SHPB/shear experiment/RDX-based aluminized explosive/damage model/explosive charge分类
军事科技引用本文复制引用
周涛,李亮亮,屈可朋,肖玮..RDX基含铝炸药的剪切试验及损伤模式[J].火炸药学报,2017,40(6):78-82,5.基金项目
国家安全重大基础研究项目 （）
