An Isotropic Model for Cyclic Plasticity Calibrated on the Whole Shape of Hardening/Softening Evolution Curve
This work presents a new isotropic model to describe the cyclic hardening/softening plasticity behavior of metals. The model requires three parameters to be evaluated experimentally. The physical behavior of each parameter is explained by sensitivity analysis. Compared to the Voce model, the propose...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-08-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/9/950 |
| _version_ | 1818657722959134720 |
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| author | Jelena Srnec Novak Francesco De Bona Denis Benasciutti |
| author_facet | Jelena Srnec Novak Francesco De Bona Denis Benasciutti |
| author_sort | Jelena Srnec Novak |
| collection | DOAJ |
| description | This work presents a new isotropic model to describe the cyclic hardening/softening plasticity behavior of metals. The model requires three parameters to be evaluated experimentally. The physical behavior of each parameter is explained by sensitivity analysis. Compared to the Voce model, the proposed isotropic model has one more parameter, which may provide a better fit to the experimental data. For the new model, the incremental plasticity equation is also derived; this allows the model to be implemented in finite element codes, and in combination with kinematic models (Armstrong and Frederick, Chaboche), if the material cyclic hardening/softening evolution needs to be described numerically. As an example, the proposed model is applied to the case of a cyclically loaded copper alloy. An error analysis confirms a significant improvement with respect to the usual Voce formulation. Finally, a numerical algorithm is developed to implement the proposed isotropic model, currently not available in finite element codes, and to make a comparison with other cyclic plasticity models in the case of uniaxial stress and strain-controlled loading. |
| first_indexed | 2024-12-17T03:46:00Z |
| format | Article |
| id | doaj.art-f53aabce14b3445fa1745b8a93021454 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-17T03:46:00Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-f53aabce14b3445fa1745b8a930214542022-12-21T22:04:53ZengMDPI AGMetals2075-47012019-08-019995010.3390/met9090950met9090950An Isotropic Model for Cyclic Plasticity Calibrated on the Whole Shape of Hardening/Softening Evolution CurveJelena Srnec Novak0Francesco De Bona1Denis Benasciutti2Politechnic Department of Engineering and Architecture (DPIA), University of Udine, via delle Scienze 208, 33100 Udine, ItalyPolitechnic Department of Engineering and Architecture (DPIA), University of Udine, via delle Scienze 208, 33100 Udine, ItalyDepartment of Engineering, University of Ferrara, via Saragat 1, 44122 Ferrara, ItalyThis work presents a new isotropic model to describe the cyclic hardening/softening plasticity behavior of metals. The model requires three parameters to be evaluated experimentally. The physical behavior of each parameter is explained by sensitivity analysis. Compared to the Voce model, the proposed isotropic model has one more parameter, which may provide a better fit to the experimental data. For the new model, the incremental plasticity equation is also derived; this allows the model to be implemented in finite element codes, and in combination with kinematic models (Armstrong and Frederick, Chaboche), if the material cyclic hardening/softening evolution needs to be described numerically. As an example, the proposed model is applied to the case of a cyclically loaded copper alloy. An error analysis confirms a significant improvement with respect to the usual Voce formulation. Finally, a numerical algorithm is developed to implement the proposed isotropic model, currently not available in finite element codes, and to make a comparison with other cyclic plasticity models in the case of uniaxial stress and strain-controlled loading.https://www.mdpi.com/2075-4701/9/9/950cyclic plasticitykinematic modelisotropic modelhardening/softening |
| spellingShingle | Jelena Srnec Novak Francesco De Bona Denis Benasciutti An Isotropic Model for Cyclic Plasticity Calibrated on the Whole Shape of Hardening/Softening Evolution Curve Metals cyclic plasticity kinematic model isotropic model hardening/softening |
| title | An Isotropic Model for Cyclic Plasticity Calibrated on the Whole Shape of Hardening/Softening Evolution Curve |
| title_full | An Isotropic Model for Cyclic Plasticity Calibrated on the Whole Shape of Hardening/Softening Evolution Curve |
| title_fullStr | An Isotropic Model for Cyclic Plasticity Calibrated on the Whole Shape of Hardening/Softening Evolution Curve |
| title_full_unstemmed | An Isotropic Model for Cyclic Plasticity Calibrated on the Whole Shape of Hardening/Softening Evolution Curve |
| title_short | An Isotropic Model for Cyclic Plasticity Calibrated on the Whole Shape of Hardening/Softening Evolution Curve |
| title_sort | isotropic model for cyclic plasticity calibrated on the whole shape of hardening softening evolution curve |
| topic | cyclic plasticity kinematic model isotropic model hardening/softening |
| url | https://www.mdpi.com/2075-4701/9/9/950 |
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