冲击压力20GPa以下有机玻璃的动态力学性态  

DYNAMIC BEHAVIOUR OF PMMA UNDER SHOCK PRESSURES LOWER THAN 20GPa

作　　者：张宝平[1] 刘长林[1] 洪兵[1] 

机构地区：[1]北京理工大学

出　　处：《兵工学报》1993年第S1期62-69,共8页Acta Armamentarii

摘　　要：采用爆炸和轻气炮两种动加载方式在有机玻璃中造成0.1～20GPa的瞬态高压。用压阻测压、电探针测速和高速纹影照相技术对试件中产生的应力波参数及其传播现象进行了观测分析。发现了加速应力波现象,并揭示其物理本质;给出了材料的Hugoniot曲线及其表式;确定出其Hugoniot屈服限为0.40GPa;展示了材料对冲击加载的复杂动态力学响应性态。依据实验数据给出了材料的动态力学性能各参数。High shook pressures in the region 0.1～20GPa in PMMA specimen were generated by a light gas gun and the explosive setup of plane wave generator. By means of the piezoresistive gauge, coaxial electric probes and high speed schlieren photography, propagation phenomena of the stress waves and their parameters were observed and measured. The acceleration wave phenomenon observed and its physical its physical essence were revealed and confirmed; the Hugoniot elastic limit of this material were evaluated 0.4GPa. In addition, other parameters describing the dynamic behaviour of the material are also given.

关 键 词：材料动态响应 应力波 高聚物性能 

分 类 号：TJ-55[兵器科学与技术]