Crystal Plasticity Finite Element Modeling of Automatic Rifle Barrel Radial Forging
The polycrystalline material is anisotropic in the plastic deformation for the reason of the structural property of the crystal such as the beginning of the slip system and the grain orientation distribution of the polycrystalline material.Crystal plasticity finite element method(CPFEM)model,incorporating the crystal plasticity theory into the framework of the finite element method,has been used to simulate the plastic deformation process at the crystal scale to approaching the nature of physical.The crystal plasticity finite element method is used into the radial forging process of an automatic rifle barrel in this article.The geometrical model for polycrystal is built based on the Voronoi diagram approach and the Python script has been proposed to input the geometrical model and the initial texture in ABAQUS CAE.In this process,the Asaro hardening model is chosen and introduced into the CPFEM model by developing a user-defined material constitutive law subroutine(UMAT)and the parameters of constitutive model was estimated by fitting the stress-strain curve of tensile test.The flow of the material during the plastic forming process is analyzed by the pole figure of the grains in different positions of the barrel in different forging process stages.
Crystal Plasticity Finite Element Modeling Radial Forging Pole Figure
Xiaobin DONG Yongjuan WANG
Nanjing University of Science and technology,No.200,Xiaolingwei,Nanjing,Jiangsu,P.R.China
国际会议
The 5th International Conference on Mechanical Engineering and Mechanics(第五届国际机械工程与力学会议)
江苏扬州
英文
270-275
2014-08-21（万方平台首次上网日期，不代表论文的发表时间）