摘要
0Cr17Ni4Cu4Nb为沉淀硬化型不锈钢,常用在高强度冲击结构中。本文利用分离式Hopkinson压杆实验设备测定了该材料在多种应变率下的动态应力-应变关系,在此基础上选择了Cowper-Symonds动态强化模型来拟合和描述材料的动态本构特性。利用拟合得到的相应参数对该材料的动态力学性能进行详细的分析,同时还分析了该材料的工程应力-应变曲线和真实应力-应变曲线参数之间的相同点和不同点。
Dynamic stress-strain relation of a stainless steel of0Cr17Ni4Cu4Nb was measured with the split Hopkinson pressure bar apparatus. The Cowper-Symonds constitutive model was chosen to analyze dynamic mechanical property after its relationship parameters were fit with the experimental data. And two fitting method was compared to find their differences.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2007年第3期418-421,共4页
Journal of Materials Science and Engineering
基金
国家自然科学基金资助项目(10532020)
关键词
SHPB
动态力学性能
C-S模型
本构拟合
SHPB
dynamic mechanics property
Cowper-Symonds model
constitutive model fitting
