摘要
在对称碰撞实验中 ,用VISAR测试系统记录了自由面粒子速度剖面。结合材料常压弹性纵波声速的测量 ,利用冲击加载的双波结构 ,测量了钽在 30GPa以内的冲击波速度 ,给出了线性相关性非常好的D up 关系 ,并与高压下的测量结果作了比较。同时对由自由面粒子速度剖面来计算层裂强度的模型进行了讨论 ,发现模型差异对钽的层裂强度的影响超过 30 %。
Symmetrical impact experiments were performed for tantalum,the free surface velocity profiles were measured with VISAR system.Making use of the double wave configurations of shock loading,the shock wave velocities were determined at stresses below 30GPa,and a very good linear dependent relation of D u p has been obtained.The comparison with the experimental result of high pressure region was also made.Discussion about models for calculating spall strength was conducted.It was found that the spallation strength of tantalum calculated with different models has differences up to more than 30%.
出处
《高压物理学报》
CAS
CSCD
北大核心
2001年第4期265-270,共6页
Chinese Journal of High Pressure Physics
