Thermo-mechanical analysis on thermal deformation of thin stainless steel in laser micro-welding
In the present study, a three-dimensional finite element model has been developed to simulate the temperature, stress and deformation fields in continuous wave (CW) laser micro-welding of thin stainless steel sheet. The welding deformation was experimentally evaluated using a single-mode fiber laser...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IGI Global
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/43389/1/Thermo-mechanical%20analysis%20on%20thermal%20deformation%20of%20thin%20stainless%20steel%20in%20laser%20micro-welding.pdf |
| _version_ | 1825929352666152960 |
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| author | Ismail, Mohd Idris Shah Okamoto, Yasuhiro Okada, Akira |
| author_facet | Ismail, Mohd Idris Shah Okamoto, Yasuhiro Okada, Akira |
| author_sort | Ismail, Mohd Idris Shah |
| collection | UPM |
| description | In the present study, a three-dimensional finite element model has been developed to simulate the temperature, stress and deformation fields in continuous wave (CW) laser micro-welding of thin stainless steel sheet. The welding deformation was experimentally evaluated using a single-mode fiber laser with a high-speed scanning system. Application of developed thermal model demonstrated that the laser parameters, such as laser power, scanning velocity and spot diameter have a significant effect on temperature field and the weld pool. In the case of welding deformation, numerical simulation was carried out by an uncoupled thermo-mechanical model. The welding stress and deformation are generated by plastic deformation during the heating and cooling periods. It was confirmed that the residual stress is higher than yield strength and has strongest effect upon the welding deformation. The numerical simulated results have proved that the developed finite element model is effective to predict thermal histories, thermally induced stresses and welding deformations in the thin material. |
| first_indexed | 2024-03-06T08:55:31Z |
| format | Article |
| id | upm.eprints-43389 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:55:31Z |
| publishDate | 2016 |
| publisher | IGI Global |
| record_format | dspace |
| spelling | upm.eprints-433892016-05-19T01:52:33Z http://psasir.upm.edu.my/id/eprint/43389/ Thermo-mechanical analysis on thermal deformation of thin stainless steel in laser micro-welding Ismail, Mohd Idris Shah Okamoto, Yasuhiro Okada, Akira In the present study, a three-dimensional finite element model has been developed to simulate the temperature, stress and deformation fields in continuous wave (CW) laser micro-welding of thin stainless steel sheet. The welding deformation was experimentally evaluated using a single-mode fiber laser with a high-speed scanning system. Application of developed thermal model demonstrated that the laser parameters, such as laser power, scanning velocity and spot diameter have a significant effect on temperature field and the weld pool. In the case of welding deformation, numerical simulation was carried out by an uncoupled thermo-mechanical model. The welding stress and deformation are generated by plastic deformation during the heating and cooling periods. It was confirmed that the residual stress is higher than yield strength and has strongest effect upon the welding deformation. The numerical simulated results have proved that the developed finite element model is effective to predict thermal histories, thermally induced stresses and welding deformations in the thin material. IGI Global 2016 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/43389/1/Thermo-mechanical%20analysis%20on%20thermal%20deformation%20of%20thin%20stainless%20steel%20in%20laser%20micro-welding.pdf Ismail, Mohd Idris Shah and Okamoto, Yasuhiro and Okada, Akira (2016) Thermo-mechanical analysis on thermal deformation of thin stainless steel in laser micro-welding. International Journal of Manufacturing, Materials, and Mechanical Engineering, 6 (2). pp. 51-66. ISSN 2156-1680; ESSN: 2156-1672 http://www.igi-global.com/article/thermo-mechanical-analysis-on-thermal-deformation-of-thin-stainless-steel-in-laser-micro-welding/146823 10.4018/IJMMME.2016040104 |
| spellingShingle | Ismail, Mohd Idris Shah Okamoto, Yasuhiro Okada, Akira Thermo-mechanical analysis on thermal deformation of thin stainless steel in laser micro-welding |
| title | Thermo-mechanical analysis on thermal deformation of thin stainless steel in laser micro-welding |
| title_full | Thermo-mechanical analysis on thermal deformation of thin stainless steel in laser micro-welding |
| title_fullStr | Thermo-mechanical analysis on thermal deformation of thin stainless steel in laser micro-welding |
| title_full_unstemmed | Thermo-mechanical analysis on thermal deformation of thin stainless steel in laser micro-welding |
| title_short | Thermo-mechanical analysis on thermal deformation of thin stainless steel in laser micro-welding |
| title_sort | thermo mechanical analysis on thermal deformation of thin stainless steel in laser micro welding |
| url | http://psasir.upm.edu.my/id/eprint/43389/1/Thermo-mechanical%20analysis%20on%20thermal%20deformation%20of%20thin%20stainless%20steel%20in%20laser%20micro-welding.pdf |
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