摘要
选取硅橡胶、聚氨酯泡沫、Comp.B炸药、PBX-HMX(97%)炸药以及6061-T6铝合金五种材料试样,对分离式霍普金森压杆(SHPB)实验技术中的端面摩擦效应进行了研究。实验结果表明,SHPB实验技术中的端面摩擦效应与材料的性质相关。另外,基于各向同性弹性理论,运用能量守恒法对SHPB实验中的端面摩擦效应进行了机理分析,研究表明,材料泊松比、端面摩擦系数、试样长径比、轴向应变是SHPB实验中影响端面摩擦效应的四个因素。
Interracial friction effects between specimens and bars in SHPB technique were studied. Five materials with different features, silicon rubber, polyurethane foam, Comp. B explosive, PBX-HMX （97%） polymer bonded explosive and 6061-T6 aluminum alloy,were chosed as specimens. Experimental results show that interracial friction effects in SHPB tests are related with the tested material properties. Based on the isotropic elastic hypothesis, a theoretic analysis is made on an energy conservation consideration. The reduced theoretic formulations show that material Poisson＇s ratio, interracial friction coefficient, length-to-diameter ratio of the specimens and axial strains are four influent factors for the friction effects.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2006年第2期134-139,共6页
Explosion and Shock Waves
基金
国家自然科学基金项目(10276038)
关键词
固体力学
端面摩擦效应
SHPB实验
材料性质
能量守恒法
solid machanics
interracial friction effect
SHPB experiment
material properties
energy conservation
