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주기하중을 받고 있는 금속의 시간의존적 소성 모델 비교

A Rate Dependent Plasticity Model under Cyclic Loading of Metals

  • 김동건 (한국수력원자력 중앙연구원) ;
  • Kim, Dongkeon (Central Research Institute, Korea Hydro & Nuclear Power Co., LTD.) ;
  • Dargush, Gary F. (Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York)
  • 투고 : 2013.02.04
  • 심사 : 2013.03.08
  • 발행 : 2013.03.31

초록

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. Many 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.

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