Advanced constitutive model for repeated stress relaxation accounting for transient mobile dislocation density and internal stress

Repeated stress relaxation tests are used to characterize the macroscopic time dependent behavior in metals. During stress relaxation, the mobile dislocation density and internal stress vary continuously with time. The phenomenological models available do not provide a comprehensive mathematical framework to account for transient effects during stress relaxation accurately. An advanced stress relaxation model based on the logarithmic model is...