无氧铜平面冲击波实验的锰铜应力计测试  

Measurements in Planar Shock Wave Experiments for OFHC Using Manganin Gauges

作　　者：范春雷[1] 胡金伟[2] 陈大年[2] 王焕然[2] 谢书港[2] 

机构地区：[1]南洋职业技术学院建筑工程系,浙江嘉兴314003 [2]宁波大学力学和材料科学研究中心,浙江宁波315211

出　　处：《高压物理学报》2008年第1期79-84,共6页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金项目(10472048);中国工程物理研究院专项基金;浙江省教育厅科研项目(20061673)

摘　　要：利用纵向锰铜应力计,对无氧铜(OFHC)材料进行了层裂实验,得到了典型的层裂信号;同时测量试件中的纵向应力和横向应力,直接确定了其流动应力。对实验结果与理论计算结果进行了比较,讨论了高压、高应变率下的强度模型以及横向应力计测试问题。The typical spall signals are obtained in planar shock wave experiments of oxygen-free high- conductivity copper（OFHC） using manganin gauges. The yield stresses of OFHC under planar shock loading are also obtained from longitudinal and transverse stresses recorded by manganin gauges. The experimental data are compared with numerical simulations. The influence of strength models for OFHC at high strain rate and high pressure on the simulated results are revealed. The determination of transverse stresses by using manganin gauges are also discussed.

关 键 词：平面冲击波 层裂 纵向应力 横向应力 流动应力 

分 类 号：O347.3[理学—固体力学]