A CONSTITUTIVE EQUATION FOR STRUCTURAL STEELS BASED ON A MONOTONIC LOADING CURVE UNDER CYCLIC LOADING

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  • 単調載荷曲線を基にした繰り返し塑性履歴を受ける鋼材の構成式
  • タンチョウ サイカ キョクセン オ モト ニ シタ クリカエシ ソセイ リレキ

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It is important to grasp plastic behavior of steel structures and a constitutive equation which can represent stress-strain relationship for structural steels under cyclic loading is required. In this paper, a constitutive equation based on a monotonic loading curve is developed. The feature of this model is that plastic strain-true stress relationship of a structural steel consists of two domains which are a part of a monotomc loading curve and a transition domain. And three types of experiments for resolving the material properties were shown. The proposed uniaxial constitutive equation is extended to the mutlidimentional stress state. It is confirmed that this proposed constitutive equation can represent experimental data adequately.

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