含能材料2011，Vol.19Issue(6)：684-688,5.DOI:10.3969/j.issn.1006-9941.2011.06.019
PBX一维动态拉伸性能实验研究
One-dimension Dynamic Tensile Properties of PBX
摘要
Abstract
Through designing dynamic tensile sample of PBX,selecting length of input bar and output bar,placing strain gauge in proper position, improving experiment methods based on properties of PBX which compressive strength was greater than tensile strength,it was realized dynamic tensile strength in the reflected split Hopkinson press bar (SHTB). It showed dynamic tests beared high tensile strength. Dynamic tensile strength of PBX attained 13 Mpa in 30 s~' strain rate while quasi-static tensile strength was only 7 Mpa. Through observed by SEM,quasi-static tension failure was different with dynamic tension failure because crack had different expand methods and temperature rise induced binder soften. Destroyed model in quasi-static tension was tran-scrystalline fracture and intergranular fracture and it was binder debonded in dynamic tension.关键词
固体力学/反射式霍普金森拉杆/PBX/动态力学性能/高应变率Key words
solid mechanics/ split Hopkinson press bar (SHTB)/ PBX/ dynamic mechanical property/ high strain rate分类
军事科技引用本文复制引用
蓝林钢,温茂萍,李明,庞海燕,敬仕明..PBX一维动态拉伸性能实验研究[J].含能材料,2011,19(6):684-688,5.基金项目
中国工程物理研究院面上基金(2008B0203013) （2008B0203013）
自然科学基金(10832003) （10832003）
