Plasticity Resource of Cast Iron at Deforming Broaching
The contact interaction mechanics of deformation broaching in low-plasticity materials is studied. Particular attention is paid to the study of the stress–strain state parameters and the plasticity margin in the deformation zone during the machining of gray cast iron EN-GJL-200. The stress–strain st...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/3/551 |
| _version_ | 1797610164131463168 |
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| author | Yakiv Nemyrovskyi Ihor Shepelenko Michael Storchak |
| author_facet | Yakiv Nemyrovskyi Ihor Shepelenko Michael Storchak |
| author_sort | Yakiv Nemyrovskyi |
| collection | DOAJ |
| description | The contact interaction mechanics of deformation broaching in low-plasticity materials is studied. Particular attention is paid to the study of the stress–strain state parameters and the plasticity margin in the deformation zone during the machining of gray cast iron EN-GJL-200. The stress–strain state was analyzed using a finite-element model of the deforming broaching process for each area of the deformation zone. The model parameters of the machined material were determined experimentally by compressing specimens of gray cast iron EN-GJL-200. The changes in the parameters of accumulated strain, stress tensor components, stress triaxiality ratio, hydrostatic stress, and plasticity margin at different deformation zones along the machined specimen depth are analyzed. It is shown that there is a zone of local plastic deformation in conditions of critical contact stresses. This leads to the appearance of tensile stresses that reduce the plasticity margin in the surface layer. The impact of tool geometry on the stress–strain state of the surface layer is also discussed, and recommendations for the optimal working angle of the deforming element are provided based on plasticity margin minimization. |
| first_indexed | 2024-03-11T06:10:40Z |
| format | Article |
| id | doaj.art-c29c8f3c896d4dbf91fa5b8d67b90da3 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T06:10:40Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-c29c8f3c896d4dbf91fa5b8d67b90da32023-11-17T12:39:20ZengMDPI AGMetals2075-47012023-03-0113355110.3390/met13030551Plasticity Resource of Cast Iron at Deforming BroachingYakiv Nemyrovskyi0Ihor Shepelenko1Michael Storchak2Department of Machine Operation and Repair, Central Ukrainian National Technical University, 7 Universytetskyi Avenue, 25006 Kropyvnytskyi, UkraineDepartment of Machine Operation and Repair, Central Ukrainian National Technical University, 7 Universytetskyi Avenue, 25006 Kropyvnytskyi, UkraineInstitute for Machine Tools, University of Stuttgart, Holzgartenstraße 17, 70174 Stuttgart, GermanyThe contact interaction mechanics of deformation broaching in low-plasticity materials is studied. Particular attention is paid to the study of the stress–strain state parameters and the plasticity margin in the deformation zone during the machining of gray cast iron EN-GJL-200. The stress–strain state was analyzed using a finite-element model of the deforming broaching process for each area of the deformation zone. The model parameters of the machined material were determined experimentally by compressing specimens of gray cast iron EN-GJL-200. The changes in the parameters of accumulated strain, stress tensor components, stress triaxiality ratio, hydrostatic stress, and plasticity margin at different deformation zones along the machined specimen depth are analyzed. It is shown that there is a zone of local plastic deformation in conditions of critical contact stresses. This leads to the appearance of tensile stresses that reduce the plasticity margin in the surface layer. The impact of tool geometry on the stress–strain state of the surface layer is also discussed, and recommendations for the optimal working angle of the deforming element are provided based on plasticity margin minimization.https://www.mdpi.com/2075-4701/13/3/551deforming broachinglow-plasticity materialsimulationdeformation zonenon-contact zoneplasticity |
| spellingShingle | Yakiv Nemyrovskyi Ihor Shepelenko Michael Storchak Plasticity Resource of Cast Iron at Deforming Broaching Metals deforming broaching low-plasticity material simulation deformation zone non-contact zone plasticity |
| title | Plasticity Resource of Cast Iron at Deforming Broaching |
| title_full | Plasticity Resource of Cast Iron at Deforming Broaching |
| title_fullStr | Plasticity Resource of Cast Iron at Deforming Broaching |
| title_full_unstemmed | Plasticity Resource of Cast Iron at Deforming Broaching |
| title_short | Plasticity Resource of Cast Iron at Deforming Broaching |
| title_sort | plasticity resource of cast iron at deforming broaching |
| topic | deforming broaching low-plasticity material simulation deformation zone non-contact zone plasticity |
| url | https://www.mdpi.com/2075-4701/13/3/551 |
| work_keys_str_mv | AT yakivnemyrovskyi plasticityresourceofcastironatdeformingbroaching AT ihorshepelenko plasticityresourceofcastironatdeformingbroaching AT michaelstorchak plasticityresourceofcastironatdeformingbroaching |