An anisotropic tertiary creep damage constitutive model for anisotropic materials

摘要: Abstract When an anisotropic material is subject to creep conditions and a complex state of stress, damage behavior observed. Previous research has focused on the isotropic materials but few constitutive models have been developed for creeping solids. This paper describes development new tertiary model materials. An advanced tensorial formulation implemented which includes both orientation relative loading degree anisotropy in model. A variation Norton-power law secondary Hill’s analogy. Experiments are conducted directionally-solidified bucket DS GTD-111. The user programmable feature (UPF) ANSYS FEA software. ability regress Kachanov-Rabotnov demonstrated through comparison with uniaxial experiments. parametric study stress rotation conducted. Results indicate that deformation modeled accurately; however improved evolution may be necessary.