PROCESS SIMULATION AND PARAMETER OPTIMIZATION OF MULTI-LAYER MULTI-PASS WELDED ROTOR
Taking the welded rotor of steam turbine as the research object, a two-dimensional axisymmetric finite element model of multi-layer and multi-pass TIG are welding process was established. By using the double ellipsoidal heat source model, the element birth and death method and the Dflux heat source...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2023-12-01
|
| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2023.06.015 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841534149841649664 |
|---|---|
| author | WANG YuChao ZHU MingLiang FAN ManJie HUO Xin XUAN FuZhen |
| author_facet | WANG YuChao ZHU MingLiang FAN ManJie HUO Xin XUAN FuZhen |
| author_sort | WANG YuChao |
| collection | DOAJ |
| description | Taking the welded rotor of steam turbine as the research object, a two-dimensional axisymmetric finite element model of multi-layer and multi-pass TIG are welding process was established. By using the double ellipsoidal heat source model, the element birth and death method and the Dflux heat source movement subroutine, the welding process was numerically simulated, and the distribution of temperature field and stress field and the optimization method of welding process were analyzed. The results show that a complex heat load curve was formed after repeated heating and cooling during the multi-layer and multi-pass welding process, and the average stress level of the matrix on both sides increases, which improves the uneven stress distribution of the welds. The stress level of the weld zone of the three passes in the same layer decreased slightly compared with the two passes, but the width of the high stress level zone increased, and the welding deformation increased by about 7.9% at the top and bottom of the groove. The research suggests that the number of welding passes in the same layer has an important influence on the stress and deformation of the welds, which should be selected reasonably. |
| format | Article |
| id | doaj-art-20b4ee9f68ea49da949521844e3cfdab |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2023-12-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-20b4ee9f68ea49da949521844e3cfdab2025-01-15T02:44:55ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692023-12-01451380138655272830PROCESS SIMULATION AND PARAMETER OPTIMIZATION OF MULTI-LAYER MULTI-PASS WELDED ROTORWANG YuChaoZHU MingLiangFAN ManJieHUO XinXUAN FuZhenTaking the welded rotor of steam turbine as the research object, a two-dimensional axisymmetric finite element model of multi-layer and multi-pass TIG are welding process was established. By using the double ellipsoidal heat source model, the element birth and death method and the Dflux heat source movement subroutine, the welding process was numerically simulated, and the distribution of temperature field and stress field and the optimization method of welding process were analyzed. The results show that a complex heat load curve was formed after repeated heating and cooling during the multi-layer and multi-pass welding process, and the average stress level of the matrix on both sides increases, which improves the uneven stress distribution of the welds. The stress level of the weld zone of the three passes in the same layer decreased slightly compared with the two passes, but the width of the high stress level zone increased, and the welding deformation increased by about 7.9% at the top and bottom of the groove. The research suggests that the number of welding passes in the same layer has an important influence on the stress and deformation of the welds, which should be selected reasonably.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2023.06.015Multi-layer and multi-pass TIGNumerical simulationStress fieldTemperature fieldProcess optimization |
| spellingShingle | WANG YuChao ZHU MingLiang FAN ManJie HUO Xin XUAN FuZhen PROCESS SIMULATION AND PARAMETER OPTIMIZATION OF MULTI-LAYER MULTI-PASS WELDED ROTOR Jixie qiangdu Multi-layer and multi-pass TIG Numerical simulation Stress field Temperature field Process optimization |
| title | PROCESS SIMULATION AND PARAMETER OPTIMIZATION OF MULTI-LAYER MULTI-PASS WELDED ROTOR |
| title_full | PROCESS SIMULATION AND PARAMETER OPTIMIZATION OF MULTI-LAYER MULTI-PASS WELDED ROTOR |
| title_fullStr | PROCESS SIMULATION AND PARAMETER OPTIMIZATION OF MULTI-LAYER MULTI-PASS WELDED ROTOR |
| title_full_unstemmed | PROCESS SIMULATION AND PARAMETER OPTIMIZATION OF MULTI-LAYER MULTI-PASS WELDED ROTOR |
| title_short | PROCESS SIMULATION AND PARAMETER OPTIMIZATION OF MULTI-LAYER MULTI-PASS WELDED ROTOR |
| title_sort | process simulation and parameter optimization of multi layer multi pass welded rotor |
| topic | Multi-layer and multi-pass TIG Numerical simulation Stress field Temperature field Process optimization |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2023.06.015 |
| work_keys_str_mv | AT wangyuchao processsimulationandparameteroptimizationofmultilayermultipassweldedrotor AT zhumingliang processsimulationandparameteroptimizationofmultilayermultipassweldedrotor AT fanmanjie processsimulationandparameteroptimizationofmultilayermultipassweldedrotor AT huoxin processsimulationandparameteroptimizationofmultilayermultipassweldedrotor AT xuanfuzhen processsimulationandparameteroptimizationofmultilayermultipassweldedrotor |