高压物理学报2017，Vol.31Issue(3)：239-248,10.DOI:10.11858/gywlxb.2017.03.005
不同硬度30CrMnSiNi2A钢的动态本构与损伤参数
Dynamic Constitutive and Damage Parameters of 30CrMnSiNi2A Steel with Different Hardnesses
摘要
Abstract
To find out about the effect of hardness on the dynamic behavior and the damage parameters of 30CrMnSiNi2A steel,we investigated the quasi-static and dynamic mechanical properties of different steel alloys with the hardness of 31HRC,36 HRC,45 HRC and 55 HRC using a universal material testing machine and a split Hopkinson pressure bar (SHPB).Based on the relationship among the yield strength,the strain rate and the equivalent plastic strain,we determined the parameters of JohnsonCook constitutive model of 30CrMnSiNi2A steel with different hardnesses.Furthermore,we obtained the parameters of Johnson-Cook failure model for 30CrMnSiNi2A steel by the relationship among the failure strain,the stress triaxiality and the strain rate,and summarized the remarkable influence of the hardness on the parameters of Johnson-Cook constitutive model and failure model of 30CrMnSiNi2A steel.The results show that,as the hardness of 30CrMnSiNi2A steel increases,its plasticity and strain rate sensitivity decreases,but its brittleness increases.关键词
本构模型/损伤参数/30CrMnSiNi2A钢/Johnson-Cook模型/分离式霍普金森压杆(SHPB)Key words
constitutive model/damage parameters/30CrMnSiNi2A steel/Johnson-Cook model/split Hopkinson pressure bar分类
数理科学引用本文复制引用
李磊,张先锋,吴雪,高飞,刘闯..不同硬度30CrMnSiNi2A钢的动态本构与损伤参数[J].高压物理学报,2017,31(3):239-248,10.基金项目
中共中央组织部青年拔尖人才支持计划(2014) （2014）
爆炸冲击防灾减灾国家重点实验室(解放军理工大学)开放基金(DPMEIKF201405) （解放军理工大学）
