2D Axisymmetric Modeling of Refill Friction Stir Spot Welding and Experimental Validation
The development of the simulation of refill friction stir spot welding (RFSSW) is critical to be able to predict the behavior of aluminum in the process under specific parameters. A two-dimensional axisymmetric thermo-mechanical model of the RFSSW process for 7075-T6 aluminum alloy sheet was develop...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Journal of Manufacturing and Materials Processing |
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| Online Access: | https://www.mdpi.com/2504-4494/6/4/89 |
| _version_ | 1797444309613543424 |
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| author | Evan Berger Michael Miles Andrew Curtis Paul Blackhurst Yuri Hovanski |
| author_facet | Evan Berger Michael Miles Andrew Curtis Paul Blackhurst Yuri Hovanski |
| author_sort | Evan Berger |
| collection | DOAJ |
| description | The development of the simulation of refill friction stir spot welding (RFSSW) is critical to be able to predict the behavior of aluminum in the process under specific parameters. A two-dimensional axisymmetric thermo-mechanical model of the RFSSW process for 7075-T6 aluminum alloy sheet was developed and validated with experimental data. Welding temperatures and material flow, including defect formation, were accurately predicted by the model. While these results are encouraging, further development of bonding criteria is needed for simulation models, in order to enable the prediction of properties such as joint strength. The simulation was validated by a comparison of temperatures measured in the weld, which were demonstrated to be accurate at all positions in and around the weld nugget, within 10% of measured values. Additional validation of material flow was performed with post-weld optical microscopy where the simulation is shown to be able to predict the presence or absence of internal volumetric defects based on the variation in process parameters. Finally, the prediction of the tool process forces during the welding cycle were evaluated; however, both probe and shoulder forces were overestimated using the standard flow stress data for AA 7075-T6. |
| first_indexed | 2024-03-09T13:09:44Z |
| format | Article |
| id | doaj.art-8b5cbb72c6674d099c614fe39eea12a2 |
| institution | Directory Open Access Journal |
| issn | 2504-4494 |
| language | English |
| last_indexed | 2024-03-09T13:09:44Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Manufacturing and Materials Processing |
| spelling | doaj.art-8b5cbb72c6674d099c614fe39eea12a22023-11-30T21:43:03ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942022-08-01648910.3390/jmmp60400892D Axisymmetric Modeling of Refill Friction Stir Spot Welding and Experimental ValidationEvan Berger0Michael Miles1Andrew Curtis2Paul Blackhurst3Yuri Hovanski4Department of Manufacturing Engineering, Brigham Young University, Provo, UT 84602, USADepartment of Manufacturing Engineering, Brigham Young University, Provo, UT 84602, USADepartment of Manufacturing Engineering, Brigham Young University, Provo, UT 84602, USADepartment of Manufacturing Engineering, Brigham Young University, Provo, UT 84602, USADepartment of Manufacturing Engineering, Brigham Young University, Provo, UT 84602, USAThe development of the simulation of refill friction stir spot welding (RFSSW) is critical to be able to predict the behavior of aluminum in the process under specific parameters. A two-dimensional axisymmetric thermo-mechanical model of the RFSSW process for 7075-T6 aluminum alloy sheet was developed and validated with experimental data. Welding temperatures and material flow, including defect formation, were accurately predicted by the model. While these results are encouraging, further development of bonding criteria is needed for simulation models, in order to enable the prediction of properties such as joint strength. The simulation was validated by a comparison of temperatures measured in the weld, which were demonstrated to be accurate at all positions in and around the weld nugget, within 10% of measured values. Additional validation of material flow was performed with post-weld optical microscopy where the simulation is shown to be able to predict the presence or absence of internal volumetric defects based on the variation in process parameters. Finally, the prediction of the tool process forces during the welding cycle were evaluated; however, both probe and shoulder forces were overestimated using the standard flow stress data for AA 7075-T6.https://www.mdpi.com/2504-4494/6/4/89refill friction stir spot weldingmodelthermal comparisonmicroscopy |
| spellingShingle | Evan Berger Michael Miles Andrew Curtis Paul Blackhurst Yuri Hovanski 2D Axisymmetric Modeling of Refill Friction Stir Spot Welding and Experimental Validation Journal of Manufacturing and Materials Processing refill friction stir spot welding model thermal comparison microscopy |
| title | 2D Axisymmetric Modeling of Refill Friction Stir Spot Welding and Experimental Validation |
| title_full | 2D Axisymmetric Modeling of Refill Friction Stir Spot Welding and Experimental Validation |
| title_fullStr | 2D Axisymmetric Modeling of Refill Friction Stir Spot Welding and Experimental Validation |
| title_full_unstemmed | 2D Axisymmetric Modeling of Refill Friction Stir Spot Welding and Experimental Validation |
| title_short | 2D Axisymmetric Modeling of Refill Friction Stir Spot Welding and Experimental Validation |
| title_sort | 2d axisymmetric modeling of refill friction stir spot welding and experimental validation |
| topic | refill friction stir spot welding model thermal comparison microscopy |
| url | https://www.mdpi.com/2504-4494/6/4/89 |
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