Modification of the Johnson–Cook Material Model for Improved Simulation of Hard Milling High-Performance Steel Components
Understanding the effect of thermomechanical loads during finish cutting processes, in our case hard milling, on the surface integrity of the workpiece is crucial for the creation of defined quality characteristics of high-performance components. Compared to computationally generated modifications b...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Applied Mechanics |
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| Online Access: | https://www.mdpi.com/2673-3161/2/3/32 |
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| author | Andrey Vovk Amin Pourkaveh Dehkordi Rainer Glüge Bernhard Karpuschewski Jens Sölter |
| author_facet | Andrey Vovk Amin Pourkaveh Dehkordi Rainer Glüge Bernhard Karpuschewski Jens Sölter |
| author_sort | Andrey Vovk |
| collection | DOAJ |
| description | Understanding the effect of thermomechanical loads during finish cutting processes, in our case hard milling, on the surface integrity of the workpiece is crucial for the creation of defined quality characteristics of high-performance components. Compared to computationally generated modifications by simulation, the measurement-based determination of material modifications can only be carried out selectively and on a point-by-point basis. In practice, however, detailed knowledge of the changes in material properties at arbitrary points of the high-performance component is of great interest. In this paper, a modification of the well-known Johnson–Cook material model using the finite element software Abaqus is presented. Special attention was paid to the kinematic hardening behavior of the used steel material. Cyclic loads are relevant for the chip formation simulation because, during milling, after each cut, the material under the surface is loaded plastically several times and not necessarily in the same direction. Therefore, in analogy, multiple bending was investigated on samples made of 42CrMo4. A pronounced Bauschinger effect was observed in the bending tests. An adaptation of the material model to the results of the bending tests was only possible to a limited extent without kinematic hardening, which is why the Johnson–Cook model was supplemented by the Armstrong–Frederick hardening approach. The modified Johnson–Cook–Armstrong–Frederick material model was developed for practical use as a VUMAT and verified by bending tests for simulation use. |
| first_indexed | 2024-03-10T07:56:38Z |
| format | Article |
| id | doaj.art-fac3644a336f49cab42caa1fb4157794 |
| institution | Directory Open Access Journal |
| issn | 2673-3161 |
| language | English |
| last_indexed | 2024-03-10T07:56:38Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Mechanics |
| spelling | doaj.art-fac3644a336f49cab42caa1fb41577942023-11-22T11:49:54ZengMDPI AGApplied Mechanics2673-31612021-08-012357158010.3390/applmech2030032Modification of the Johnson–Cook Material Model for Improved Simulation of Hard Milling High-Performance Steel ComponentsAndrey Vovk0Amin Pourkaveh Dehkordi1Rainer Glüge2Bernhard Karpuschewski3Jens Sölter4Leibniz-Institut für Werkstofforientierte Technologien—WT, D-28359 Bremen, GermanyLeibniz-Institut für Werkstofforientierte Technologien—WT, D-28359 Bremen, GermanyDB Netz AG, Maybachstr. 26, D-39104 Magdeburg, GermanyLeibniz-Institut für Werkstofforientierte Technologien—WT, D-28359 Bremen, GermanyLeibniz-Institut für Werkstofforientierte Technologien—WT, D-28359 Bremen, GermanyUnderstanding the effect of thermomechanical loads during finish cutting processes, in our case hard milling, on the surface integrity of the workpiece is crucial for the creation of defined quality characteristics of high-performance components. Compared to computationally generated modifications by simulation, the measurement-based determination of material modifications can only be carried out selectively and on a point-by-point basis. In practice, however, detailed knowledge of the changes in material properties at arbitrary points of the high-performance component is of great interest. In this paper, a modification of the well-known Johnson–Cook material model using the finite element software Abaqus is presented. Special attention was paid to the kinematic hardening behavior of the used steel material. Cyclic loads are relevant for the chip formation simulation because, during milling, after each cut, the material under the surface is loaded plastically several times and not necessarily in the same direction. Therefore, in analogy, multiple bending was investigated on samples made of 42CrMo4. A pronounced Bauschinger effect was observed in the bending tests. An adaptation of the material model to the results of the bending tests was only possible to a limited extent without kinematic hardening, which is why the Johnson–Cook model was supplemented by the Armstrong–Frederick hardening approach. The modified Johnson–Cook–Armstrong–Frederick material model was developed for practical use as a VUMAT and verified by bending tests for simulation use.https://www.mdpi.com/2673-3161/2/3/32Johnson–Cook modelkinematic hardeningAbaqusbending testArmstrong–Frederick |
| spellingShingle | Andrey Vovk Amin Pourkaveh Dehkordi Rainer Glüge Bernhard Karpuschewski Jens Sölter Modification of the Johnson–Cook Material Model for Improved Simulation of Hard Milling High-Performance Steel Components Applied Mechanics Johnson–Cook model kinematic hardening Abaqus bending test Armstrong–Frederick |
| title | Modification of the Johnson–Cook Material Model for Improved Simulation of Hard Milling High-Performance Steel Components |
| title_full | Modification of the Johnson–Cook Material Model for Improved Simulation of Hard Milling High-Performance Steel Components |
| title_fullStr | Modification of the Johnson–Cook Material Model for Improved Simulation of Hard Milling High-Performance Steel Components |
| title_full_unstemmed | Modification of the Johnson–Cook Material Model for Improved Simulation of Hard Milling High-Performance Steel Components |
| title_short | Modification of the Johnson–Cook Material Model for Improved Simulation of Hard Milling High-Performance Steel Components |
| title_sort | modification of the johnson cook material model for improved simulation of hard milling high performance steel components |
| topic | Johnson–Cook model kinematic hardening Abaqus bending test Armstrong–Frederick |
| url | https://www.mdpi.com/2673-3161/2/3/32 |
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