Micromechanical Modeling of Elastic-Viscoplastic Behavior of Armco-Fe at High Strain Rate

作     者：Zhiyong Huang Haomin Wang Qingyuan Wang Muhammad Kashif Khan 

作者机构：School of Aeronautics and Astronautics Sichuan University Faculty of Engineering Environment and Computing Coventry University 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2016年第29卷第6期

页      面：655-662页

核心收录：

学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Nos.11372201 and 11672196) 

主　　题：Armco-Fe high strain rate visco-plastic deformation self consistent SHPB 

摘      要：Heterogeneous dynamical stress-strain response of Armco-Fe was investigated at high strain rates through the Split Hopkinson Pressure Bar （SHPB） testing. It was found that the viscoplastic deformation in BCC ferrite grains is affected by the strain rate. Thermal softening and variation in crystal orientations under high-strain-rate loading were used in the elastic-viscoplastic modeling. The micromechanical analysis with self-consistent transition and homogenization was used for estimation of the global impact response of the material. The results from modeling were found in good agreement with the experimental data.