In real world applications, the response of structures may be dependent on the rate of loading and thus can be affected by transient loading, especially when the rate of loading is significant. In such situations, the rate of loading may become a major issue to understand structures during earthquake excitation or under blast or high velocity impact. In some cases, the rate effect on structures under strong earthquake excitation cannot be ignored when attempting to understand inelastic behavior of structures. M any researchers developed the constitutive theories in cyclic plasticity and viscoplasticity. In this study, numerical simulation by cyclic visocoplasticity models is introduced and analyzed. Finally, the analytical results are compared with experimental results as a means to evaluate and verify the model.

1. INTRODUCTION
2. Constitutive model
3. Numerical results for A36 steel subjected to monotonic loading
4. Numerical results of A36 steel subjected to cyclic loading Type 1 and Type 2
5. Numerical results of A36 steel subjected to cyclic loading Type 3 and type 4
6. CONCLUSIONS
References

• Dongkeon Kim(Senior Researcher, Central Research Institute, Korea Hydro & Nuclear Power Co., LTD) | 김동건 Corresponding author
• Gary Dargush(Professor, Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York)