Numerical Modelling of Thermo-Mechanical Effects Developed in Resistance Spot Welding of E304 Steel with Copper Interlayer
Resistance spot welding is a technique applied to join two or more similar or dissimilar metals, by applying pressure and electric current to the spot-weld area. Based on the electrical resistance property of metals, a great amount of heat is generated and used to carry out materials joints, by crea...
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| Format: | Article |
| Language: | English |
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Galati University Press
2022-12-01
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| Series: | Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology |
| Subjects: | |
| Online Access: | https://www.gup.ugal.ro/ugaljournals/index.php/awet/article/view/5531 |
| _version_ | 1797305057429946368 |
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| author | D. Birsan G. Simion |
| author_facet | D. Birsan G. Simion |
| author_sort | D. Birsan |
| collection | DOAJ |
| description | Resistance spot welding is a technique applied to join two or more similar or dissimilar metals, by applying pressure and electric current to the spot-weld area. Based on the electrical resistance property of metals, a great amount of heat is generated and used to carry out materials joints, by creating a molten metal nucleus between the components to be welded. The influence of an interlayer material, positioned between the parent materials, on the strength of similar or dissimilar welded joints was studied by researchers worldwide. In most cases, by optimising the process parameters, an increase in the welded joint strength was achieved. In this paper, the resistance spot welding of 1mm thick E304 stainless steel sheets, both with and without a copper foil interlayer, was investigated, by applying, in all cases, the same process parameters. The tensile test of the joints showed a decrease in the strength of joints performed with interlayer metal. A method to control the deterioration level of the joint’ mechanical properties is the Finite Element Analysis which allows to optimise the process parameters so that the negative effects of the process on the joint quality to be limited. It was found that an increase in amperage is needed to compensate for the addition of the interlayer metal and to obtain an adequate melting in the spot-weld area. This modification causes an increase of the molten core diameter that will lead to improvement of the welded joint strength, while no significant influence on the internal stress level was noticed in the processing and numerical analysis of the output data. |
| first_indexed | 2024-03-08T00:20:00Z |
| format | Article |
| id | doaj.art-cca9e856358f4e4ebae075edbcd006d7 |
| institution | Directory Open Access Journal |
| issn | 1221-4639 2668-6163 |
| language | English |
| last_indexed | 2024-03-08T00:20:00Z |
| publishDate | 2022-12-01 |
| publisher | Galati University Press |
| record_format | Article |
| series | Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology |
| spelling | doaj.art-cca9e856358f4e4ebae075edbcd006d72024-02-16T11:42:29ZengGalati University PressAnnals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology1221-46392668-61632022-12-013318994https://doi.org/10.35219/awet.2022.07Numerical Modelling of Thermo-Mechanical Effects Developed in Resistance Spot Welding of E304 Steel with Copper InterlayerD. Birsan0G. Simion1https://orcid.org/0000-0002-6326-5191“Dunarea de Jos” University of Galati, Faculty of Engineering, Romania“Dunarea de Jos” University of Galati, Faculty of Engineering, RomaniaResistance spot welding is a technique applied to join two or more similar or dissimilar metals, by applying pressure and electric current to the spot-weld area. Based on the electrical resistance property of metals, a great amount of heat is generated and used to carry out materials joints, by creating a molten metal nucleus between the components to be welded. The influence of an interlayer material, positioned between the parent materials, on the strength of similar or dissimilar welded joints was studied by researchers worldwide. In most cases, by optimising the process parameters, an increase in the welded joint strength was achieved. In this paper, the resistance spot welding of 1mm thick E304 stainless steel sheets, both with and without a copper foil interlayer, was investigated, by applying, in all cases, the same process parameters. The tensile test of the joints showed a decrease in the strength of joints performed with interlayer metal. A method to control the deterioration level of the joint’ mechanical properties is the Finite Element Analysis which allows to optimise the process parameters so that the negative effects of the process on the joint quality to be limited. It was found that an increase in amperage is needed to compensate for the addition of the interlayer metal and to obtain an adequate melting in the spot-weld area. This modification causes an increase of the molten core diameter that will lead to improvement of the welded joint strength, while no significant influence on the internal stress level was noticed in the processing and numerical analysis of the output data.https://www.gup.ugal.ro/ugaljournals/index.php/awet/article/view/5531resistance spot weldinge304 stainless steelcopper interlayerfinite element analysis |
| spellingShingle | D. Birsan G. Simion Numerical Modelling of Thermo-Mechanical Effects Developed in Resistance Spot Welding of E304 Steel with Copper Interlayer Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology resistance spot welding e304 stainless steel copper interlayer finite element analysis |
| title | Numerical Modelling of Thermo-Mechanical Effects Developed in Resistance Spot Welding of E304 Steel with Copper Interlayer |
| title_full | Numerical Modelling of Thermo-Mechanical Effects Developed in Resistance Spot Welding of E304 Steel with Copper Interlayer |
| title_fullStr | Numerical Modelling of Thermo-Mechanical Effects Developed in Resistance Spot Welding of E304 Steel with Copper Interlayer |
| title_full_unstemmed | Numerical Modelling of Thermo-Mechanical Effects Developed in Resistance Spot Welding of E304 Steel with Copper Interlayer |
| title_short | Numerical Modelling of Thermo-Mechanical Effects Developed in Resistance Spot Welding of E304 Steel with Copper Interlayer |
| title_sort | numerical modelling of thermo mechanical effects developed in resistance spot welding of e304 steel with copper interlayer |
| topic | resistance spot welding e304 stainless steel copper interlayer finite element analysis |
| url | https://www.gup.ugal.ro/ugaljournals/index.php/awet/article/view/5531 |
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