Determination of constitutive parameters for viscous medium
The time-dependent properties of a viscous material were experimentally and numerically investigated, which is used in viscous pressure forming of sheet metal and called as viscous medium. Shear creep and recovery tests under different levels of shear stress were performed using a dynamic shear rheometer. With the aid of the finite element method, shear creep processes were simulated and parameters in the creep equation of viscous medium were determined. The simulated and experimental results reached a good agreement. The creep equation can be used as the constitutive equation of viscous medium to simulate other viscous pressure forming processes.
Yan Liu Zhong-jin Wang Jian-guang Liu Hui Song
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, 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
789-793
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）