Thermodynamically consistent constitutive equations for nonisothermal large strain, elasto-plastic, creep behaviorThe paper is concerned with the development of constitutive relations for large nonisothermal elastic-viscoplastic deformations for metals. The kinematics of elastic-plastic deformation, valid for finite strains and rotations, is presented. The resulting elastic-plastic uncoupled equations for the deformation rate combined with use of the incremental elasticity law permits a precise and purely deductive development of elastic-viscoplastic theory. It is shown that a phenomenological thermodynamic theory in which the elastic deformation and the temperature are state variables, including few internal variables, can be utilized to construct elastic-viscoplastic constitutive equations, which are appropriate for metals. The limiting case of inviscid plasticity is examined.
Document ID
19850056274
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Riff, R. (Technion - Israel Institute of Technology, Haifa, Israel; Georgia Institute of Technology, Atlanta GA, United States)
Carlson, R. L. (Technion - Israel Inst. of Tech. Haifa, Israel)
Simitses, G. J. (Georgia Institute of Technology Atlanta, GA, United States)