AN APPLICATION OF MENEGOTTO-PINTO MODEL TO STRESS-STRAIN RELATIONSHIPS OF STEEL(SS400) UNDER REPEATED AND REVERSED LOAD

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  • 鋼素材の非弾性領域繰返し荷重下での応力と歪の関係へのMenegotto-Pintoモデルの適用

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A Mathematical expression for the curves of stress-strain relations of metals under repeated or cyclic loading is proposed. Menegotto-Pinto model is adopted as the mathematical expression. At first, the basic characteristics of the material constants involved in the model is investigated. As the result, it is clarified that the constants can not be treated as real material constants. They are some functions of stress. Next, the model is applied to SS400 and the constants are fitted to the experimental results.

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