| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 267590 | Engineering Structures | 2012 | 9 Pages |
A time-independent constitutive model for structural steels with a yield plateau is presented. The model is based on the basic principles of time-independent plasticity. The model couples the nonlinear kinematic hardening concept with a memory surface in the plastic strain space, and a pseudo memory surface in the deviatoric stress space. A brief description of the constitutive model, which is capable of capturing the response of the material for monotonic, proportional and non-proportional cyclic loading paths are given. The performance of the proposed constitutive model is verified at the structural component level, by means of finite element simulations of large-scale structural columns or bridge pier elements under constant axial load and uni-directional quasi-static cyclic loading.
► Cyclic inelastic behavior of metals that demonstrate a distinct yield plateau is addressed. ► A time-independent cyclic constitutive model for structural steels with a yield plateau is presented. ► The model is verified by means of finite element simulations of large-scale structural components. ► Good agreement between the experimental data and simulations is obtained.
