Investigation and validation on Johnson-Cook fracture parameters of 45 steel
In the FEM analysis of structure response under dynamic loading condition such as high velocity impact, the failure parameter is an important aspect of material behavior description. In this paper, the effect of high strain rate, elevated temperature and stress triaxiality on the fracture behavior of 45 steel was studied with the split Hopkinson tension bar experiments and static material experiments of varying stress state and temperature. The Johnson-Cook damage fracture model parameters were determined through these experiments. The parameters were validated by comparison between the Taylor experiments and the simulations. The consistency between experimental observation and numerical simulation indicates the parameters obtained can describe the failure behavior of 45 steel under high speed deformation.
Gang Chen Zhong-fu Chen Jun-lin Tao Yong-mei Chen Wei-fang Xu Xi-cheng Huang
Institute of Structural Mechanics, China Academy of Engineering Physics,Mianyang 621900, Sichuan Pro Southwest University of Science and Technology, Mianyang 621000, Sichuan Province, China
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
768-772
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）