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Content available Determination of Chaboche and Bouc-Wen parameters for quenched and tempered steel
Santus Ciro, Romanelli Lorenzo, Grossi Tommaso, Neri Paolo
Journal of Theoretical and Applied Mechanics
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2024
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Vol. 62 nr 3
507--519
EN
During cyclic loadings, metal alloys can undergo cyclic plasticity, for example, at notches. The Chaboche kinematic hardening model provides a versatile and realistic description of the material stress-strain behaviour under multiaxial cyclic loadings. In this work, the global properties, extracted from stabilized cycles of strain-controlled tests and from a forcecontrolled test, are employed to calculate the parameters. Alternatively, the Bouc-Wen model can provide a reliable representation of nonlinear hysteretic phenomena, and the classic nonlinear least squares approach is employed to tune its constants. The performances of the two proposed techniques are compared, and a final discussion is provided.
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