ELASTIC-PLASTIC MODEL OF DYNAMIC DEFORMATION OF ²³⁸U AND ITS ALLOY WITH M_o

B. L. Glushak, O. N. Ignatova
VANT. Ser. Mat. Mod. Fiz. Proc 1998. Вып.2. С. 45-49.

      The semiempirical elastic-plastic model for dynamically deforming ²³⁸U and its alloy with M_o is described. The ball component of the stress tensor is given in the form of Mie-Grueneisen equation of state. Stress rate is represented as the function of plastic deformation rate , plastic deformation velocity rate , current temperature T and pressure P. Values of the model parameters are given and computation results are compared to experimental data obtained using Kol’skii-Hopkinson technique. The range of this model application is restricted by the following parameters of the stressed-strained state: ; .