Identification of Dynamic Behavior Models of Concrete B22.5
We discuss experimental and numerical studies of the deformation and destruction of fine-grained concrete B22.5 under dynamic loading. The experiments were carried out using the Kolsky (or split-Hopkinson pressure bar) method, and its modifications in the strain rate range from 400 to 2000 s<sup&...
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MDPI AG
2023-03-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/6/2259 |
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| author | Anatoly M. Bragov Andrey K. Lomunov Mikhail E. Gonov Aleksandr Yu. Konstantinov Leonid A. Igumnov Victor A. Eremeyev |
| author_facet | Anatoly M. Bragov Andrey K. Lomunov Mikhail E. Gonov Aleksandr Yu. Konstantinov Leonid A. Igumnov Victor A. Eremeyev |
| author_sort | Anatoly M. Bragov |
| collection | DOAJ |
| description | We discuss experimental and numerical studies of the deformation and destruction of fine-grained concrete B22.5 under dynamic loading. The experiments were carried out using the Kolsky (or split-Hopkinson pressure bar) method, and its modifications in the strain rate range from 400 to 2000 s<sup>−1</sup>. The rate dependences of ultimate stresses and fracture energy in tension and compression are obtained. Based on experimental data, the identification of the dynamic component of two models from the LS-DYNA computational complex was carried out: *MAT_CONCRETE_DAMAGE and *MAT_CSCM. The results of a comparative analysis of the identified models based on single-element modeling and comparison with experimental data are presented. It is shown that the obtained experimental strain rate dependences of the fracture characteristics can significantly improve the predictive ability of the model compared to the default parameter set. Information about the rate dependence of the fracture energy in *MAT_CSCM model makes it possible to more realistically simulate the behavior of the material beyond the ultimate stress. |
| first_indexed | 2024-03-11T06:15:25Z |
| format | Article |
| id | doaj.art-81ad54c7d74347e982ebb6d98a6f4a45 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T06:15:25Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-81ad54c7d74347e982ebb6d98a6f4a452023-11-17T12:19:45ZengMDPI AGMaterials1996-19442023-03-01166225910.3390/ma16062259Identification of Dynamic Behavior Models of Concrete B22.5Anatoly M. Bragov0Andrey K. Lomunov1Mikhail E. Gonov2Aleksandr Yu. Konstantinov3Leonid A. Igumnov4Victor A. Eremeyev5Research Institute of Mechanics, National Research Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, RussiaResearch Institute of Mechanics, National Research Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, RussiaResearch Institute of Mechanics, National Research Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, RussiaResearch Institute of Mechanics, National Research Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, RussiaResearch Institute of Mechanics, National Research Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, RussiaResearch Institute of Mechanics, National Research Lobachevsky State University of Nizhny Novgorod, 603022 Nizhny Novgorod, RussiaWe discuss experimental and numerical studies of the deformation and destruction of fine-grained concrete B22.5 under dynamic loading. The experiments were carried out using the Kolsky (or split-Hopkinson pressure bar) method, and its modifications in the strain rate range from 400 to 2000 s<sup>−1</sup>. The rate dependences of ultimate stresses and fracture energy in tension and compression are obtained. Based on experimental data, the identification of the dynamic component of two models from the LS-DYNA computational complex was carried out: *MAT_CONCRETE_DAMAGE and *MAT_CSCM. The results of a comparative analysis of the identified models based on single-element modeling and comparison with experimental data are presented. It is shown that the obtained experimental strain rate dependences of the fracture characteristics can significantly improve the predictive ability of the model compared to the default parameter set. Information about the rate dependence of the fracture energy in *MAT_CSCM model makes it possible to more realistically simulate the behavior of the material beyond the ultimate stress.https://www.mdpi.com/1996-1944/16/6/2259ultimate stressconcretestrain rateKolsky methodidentificationbehavior model |
| spellingShingle | Anatoly M. Bragov Andrey K. Lomunov Mikhail E. Gonov Aleksandr Yu. Konstantinov Leonid A. Igumnov Victor A. Eremeyev Identification of Dynamic Behavior Models of Concrete B22.5 Materials ultimate stress concrete strain rate Kolsky method identification behavior model |
| title | Identification of Dynamic Behavior Models of Concrete B22.5 |
| title_full | Identification of Dynamic Behavior Models of Concrete B22.5 |
| title_fullStr | Identification of Dynamic Behavior Models of Concrete B22.5 |
| title_full_unstemmed | Identification of Dynamic Behavior Models of Concrete B22.5 |
| title_short | Identification of Dynamic Behavior Models of Concrete B22.5 |
| title_sort | identification of dynamic behavior models of concrete b22 5 |
| topic | ultimate stress concrete strain rate Kolsky method identification behavior model |
| url | https://www.mdpi.com/1996-1944/16/6/2259 |
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