Analyzing methods to allow for the damage of material in thermoviscoelastoplastic deformation

作者：Lelyukh Yu I^*

来源：International Applied Mechanics, 2007, 43(12): 1396-1405.

DOI：10.1007/s10778-008-0007-4

• thermoviscoelastoplasticity
• damage
• finite-element method
• three-dimensional problem

Three methods to allow for damage of isotropic materials are discussed. The relations of the theory of deformation along paths of small curvature are used as equations of state. Rabotnov's scalar equation is used to study the damage of a material during thermoviscoelastoplastic deformation. The stress determined by a stress rupture criterion that accounts for the stress mode is taken as an equivalent stress. An algorithm based on the finite-element method is developed to solve three-dimensional problems of thermoviscoelastoplasticity with allowance for material damage. The numerical results obtained are compared with experimental data.

• 出版日期2007-12