A universal constitutive model for hybrid stress-strain controlled creep-fatigue deformation

Viscoplastic constitutive model considering strain rate sensitivity under multiaxial thermomechanical fatigue loading

“…About the application in the field of mechanical science, the unified viscoplastic constitutive models are widely adopted in the expression of cyclic mechanical response of materials and structural design of components at high temperature 47–66 . For example, Wang et al 47 combined Kachanov damage evolution equation and an anisotropic tensor into the Chaboche model to describe the anisotropic mechanical response; then, the creep process was simulated by the finite element software with the subroutine of the modified model for a hollow turbine blade.…”

“…Li et al 62 examined the effectiveness of developed viscoplastic model in expressing primary creep regeneration under strain‐controlled cyclic loading and loading‐controlled creep with multiple stress transients. Based on the Walker model, Zhang et al 63 proposed a novel viscoplastic constitutive model by introducing dynamic recovery factors and self‐adaptive hardening parameters, and good agreement was obtained under hybrid stress–strain‐controlled creep–fatigue loading. Song et al 64 coupled a phase field method with the viscoplastic model for expressing the crack growth behaviors of the material, especially the growth behavior of 3D cracks was studied.…”

“…About the application in the field of mechanical science, the unified viscoplastic constitutive models are widely adopted in the expression of cyclic mechanical response of materials and structural design of components at high temperature. [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66] For example, Wang et al 47 combined Kachanov damage evolution equation and an anisotropic tensor into the Chaboche model to describe the anisotropic mechanical response; then, the creep process was simulated by the finite element software with the subroutine of the modified model for a hollow turbine blade. Zhang and Xuan 48 introduced a cyclic softening term to modify the kinematic hardening rule and proposed a linear term and a static recovery term to modify the isotropic hardening rule, which can describe the decelerated stress relaxation and the accelerated cyclic softening for the material at high temperature.…”

A post‐processing procedure for predicting high‐ and low‐cycle fatigue life of welded structures based on the master E–N curve

“…30 The method has been adopted in ASME Standards 31 and widely utilized in the fatigue evaluation of steel bridges, pressure vessels, pipe structures, and transportation. 1,27,[31][32][33][34][35][36][37] Deng et al also applied a similar concept to assess the HFMI effect of a welded T-joint. 37 All the aforementioned methods are stress-based, aiming for the HCF of welded joints.…”

“…The method performs a free‐body cut on the hypothetical crack plane, which collapses tones of fatigue data of various joint classifications into one master S – N curve 30 . The method has been adopted in ASME Standards 31 and widely utilized in the fatigue evaluation of steel bridges, pressure vessels, pipe structures, and transportation 1,27,31–37 . Deng et al also applied a similar concept to assess the HFMI effect of a welded T‐joint 37 …”