摘要
本文对延性材料纯铜和ＬＹ１２铝合金进行了层裂实验，对软回收试件进行了仔细的定量和显微金相观测，观察到了两种材料中不同做损伤的形核、增长和聚合机制，为理论分析提供了真实的实验结果．将文［４］提出的延性动态损伤模型编入了一维Ｌａｇｒａｎｇｅ有限差分动力学程序，对两组层裂实验进行了数值模拟，计算结果与实验吻合较好．
Spall tests for pure copper and LY12 aluminum alloy are performed. The mechanism of the nucleation, growth and coalescence of micro-voids is observed by means of microscopic observation for the recovered specimens. The model presented in the other paper of authors is incorporated in a hydrodynamic one-dimensional finite-difference computer code, to simulate the processes of spallation of pure copper and LY12 aluminum alloy specimens. The model successfully modeled the processes of spallation.
出处
《固体力学学报》
CAS
CSCD
北大核心
1994年第4期345-350,共6页
Chinese Journal of Solid Mechanics
关键词
金相分析
断裂试验
延性材料
spallation
microscopic observation
micro-damage
numerical simulation
