Abstract
Such structures as airplane, pressure vessel, building and so on, are subjected to cyclic loading and abrupt load because of earth quick and so on. So, it is very important to know inelastic constitutive equations of such structural metals to confirm safety in strength. In this study, inelastic behavior of SUS316 stainless steel under combined axial with torsional stresses is investigated experimentally. Influences of loading direction and prestraining on both viscosity stress and dynamic aging are evaluated based on the overstress constitutive model with aging effect. It is found that both viscosity stress and dynamic aging are independent of loading direction and amount of prestraining.
