Modeling Bake Hardening Effects in Steel Sheets—Application to Dent Resistance
This study is dedicated to the experimental characterisation and phenomenological modeling of the bake hardening effect of a thin steel sheet, to predict the static dent resistance and perform an experimental validation on a bulged part. In a first step, rectangular samples are submitted to a thermo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-07-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/8/594 |
| _version_ | 1818981890094268416 |
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| author | Sandrine Thuillier Shun-Lai Zang Julien Troufflard Pierre-Yves Manach Anthony Jegat |
| author_facet | Sandrine Thuillier Shun-Lai Zang Julien Troufflard Pierre-Yves Manach Anthony Jegat |
| author_sort | Sandrine Thuillier |
| collection | DOAJ |
| description | This study is dedicated to the experimental characterisation and phenomenological modeling of the bake hardening effect of a thin steel sheet, to predict the static dent resistance and perform an experimental validation on a bulged part. In a first step, rectangular samples are submitted to a thermo-mechanical loading to characterise the bake hardening magnitude in tension. A three-step procedure is considered, involving first a pre-strain in tension up to several values followed by unloading. Secondly, a heat treatment during a fixed time and a given temperature is performed, and finally, a reloading in tension in the same direction as the pre-strain is applied. Then, a specific device is developed to perform dent tests on a bulged specimen, to evaluate the influence of bake hardening on the dent resistance. A three-step procedure is also considered, with a pre-strain applied with a hydraulic bulge test followed by a heat treatment and then static dent test at the maximum dome height. An original phenomenological model is proposed to represent the yield stress increase after the heat treatment and the second reloading. Material parameters are identified from the tensile tests and are input data to a finite element model. The numerical prediction of the load evolution during the dent test is then compared with experimental data and shows an overall good correlation. |
| first_indexed | 2024-12-20T17:38:30Z |
| format | Article |
| id | doaj.art-38c8867df3e6444fb9c4df71bc5d798e |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-20T17:38:30Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-38c8867df3e6444fb9c4df71bc5d798e2022-12-21T19:31:10ZengMDPI AGMetals2075-47012018-07-018859410.3390/met8080594met8080594Modeling Bake Hardening Effects in Steel Sheets—Application to Dent ResistanceSandrine Thuillier0Shun-Lai Zang1Julien Troufflard2Pierre-Yves Manach3Anthony Jegat4Univ. Bretagne Sud, UMR CNRS 6027, IRDL, F-56100 Lorient, FranceKey Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi’an Jiaotong University, No. 28 Xianning Road, Xi’an 710049, ChinaUniv. Bretagne Sud, UMR CNRS 6027, IRDL, F-56100 Lorient, FranceUniv. Bretagne Sud, UMR CNRS 6027, IRDL, F-56100 Lorient, FranceUniv. Bretagne Sud, UMR CNRS 6027, IRDL, F-56100 Lorient, FranceThis study is dedicated to the experimental characterisation and phenomenological modeling of the bake hardening effect of a thin steel sheet, to predict the static dent resistance and perform an experimental validation on a bulged part. In a first step, rectangular samples are submitted to a thermo-mechanical loading to characterise the bake hardening magnitude in tension. A three-step procedure is considered, involving first a pre-strain in tension up to several values followed by unloading. Secondly, a heat treatment during a fixed time and a given temperature is performed, and finally, a reloading in tension in the same direction as the pre-strain is applied. Then, a specific device is developed to perform dent tests on a bulged specimen, to evaluate the influence of bake hardening on the dent resistance. A three-step procedure is also considered, with a pre-strain applied with a hydraulic bulge test followed by a heat treatment and then static dent test at the maximum dome height. An original phenomenological model is proposed to represent the yield stress increase after the heat treatment and the second reloading. Material parameters are identified from the tensile tests and are input data to a finite element model. The numerical prediction of the load evolution during the dent test is then compared with experimental data and shows an overall good correlation.http://www.mdpi.com/2075-4701/8/8/594steel sheetbake hardeningmechanical modelingdent resistance |
| spellingShingle | Sandrine Thuillier Shun-Lai Zang Julien Troufflard Pierre-Yves Manach Anthony Jegat Modeling Bake Hardening Effects in Steel Sheets—Application to Dent Resistance Metals steel sheet bake hardening mechanical modeling dent resistance |
| title | Modeling Bake Hardening Effects in Steel Sheets—Application to Dent Resistance |
| title_full | Modeling Bake Hardening Effects in Steel Sheets—Application to Dent Resistance |
| title_fullStr | Modeling Bake Hardening Effects in Steel Sheets—Application to Dent Resistance |
| title_full_unstemmed | Modeling Bake Hardening Effects in Steel Sheets—Application to Dent Resistance |
| title_short | Modeling Bake Hardening Effects in Steel Sheets—Application to Dent Resistance |
| title_sort | modeling bake hardening effects in steel sheets application to dent resistance |
| topic | steel sheet bake hardening mechanical modeling dent resistance |
| url | http://www.mdpi.com/2075-4701/8/8/594 |
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