Numerical Simulation Study on Welding Process of Upper Frame of Hydropower Unit
Source abstract
Abstract
To optimize the welding process of the upper frame of the hydropower unit, a thermal elastic–plastic (TEP) finite element model of the typical T-joint of the upper frame was established, and the effectiveness and accuracy of the model were verified by welding tests. The effect of welding speed and interlayer cooling time on welding residual stress and deformation was analyzed, and a welding process in line with the requirements was obtained. Based on the results of the TEP calculation, the inherent strain was obtained, and the inherent strain method (ISM) was used to predict the overall deformation of the upper frame under three welding sequence schemes, and the optimal welding sequence was obtained.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Welding Techniques and Residual Stresses · Non-Destructive Testing Techniques · Advanced Welding Techniques Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
National and Local Joint Engineering Research Center of Reliability Analysis and Testing for Mechanical and Electrical Products, Zhejiang Sci-Tech University, Hangzhou 310018, China
Funding
Special Support Plan for High-Level Talents in Zhejiang Province
References (26)
Show source-provided references
1. Numerical computation methods of welding deformation and their application in bogie frame for high-speed trains10.1016/j.jmapro.2019.01.013 ↗
2. A review of welding simulation methods for large components10.1016/j.pnsc.2023.12.004 ↗
3. Analysis of thermal elastic-plastic stress and strain during welding by finite element method
4. Determination of welding deformation in fillet-welded joint by means of numerical simulation and comparison with experimental measurements10.1016/j.jmatprotec.2006.10.013 ↗
5. Multipurpose ANSYS FE procedure for welding processes simulation10.1016/j.fusengdes.2009.01.039 ↗
6. Numerical and experimental investigation of thermal field and residual stress in laser-MIG hybrid welded NV E690 steel plates10.1016/j.jmapro.2018.05.023 ↗
7. Influence of the groove shape on welding residual stresses in P92/SUS304 dissimilar metal butt-welded joints10.1016/j.jmapro.2021.04.030 ↗
8. Numerical simulation of multi-pass GTA welding of grade 91 steel10.1016/j.jmapro.2017.04.031 ↗
9. Numerical and experimental investigations on the welding residual stresses and distortions of the short fillet welds in high strength steel plates10.1016/j.engstruct.2022.114269 ↗
10. Simulation and experiment on residual stress and deflection of cruciform welded joints10.1016/j.jcsr.2023.108023 ↗
11. Hu, Y., Pei, W., Ji, H., Yu, R., and Liu, S. (2024). Tungsten Inert Gas Welding of 6061-T6 Aluminum Alloy Frame: Finite Element Simulation and Experiment. Materials, 17.10.3390/ma17051039 ↗
12. Simulation of welding deformation for accurate ship assembling (2nd report) influence of initial imperfection to butt welded plate10.2534/jjasnaoe1968.1992.172_559 ↗
13. Development of computer-aided process planning system for plate bending by line heating (report 1)—Relation between final form of plate and inherent strain10.5957/jsp.1994.10.1.59 ↗
14. Inherent strain as an interface between computational welding mechanics and its industrial application
15. Numerical simulation of welding distortion in large structures10.1016/j.cma.2007.05.023 ↗
16. Prediction of welding deformations of stiffened panels
17. Investigation on twisting distortion of thin plate stiffened structure under welding10.1016/j.jmatprotec.2012.03.015 ↗
18. On the estimation and control of welding distortion of guide blade carrier for a 660 MW turbine by using inherent strain method10.1007/s13296-016-0098-4 ↗
19. Numerical simulation of residual stresses in aluminum alloy welded joints10.1016/j.jmapro.2019.12.056 ↗
20. Numerical prediction of deformation in thin-plate welded joints using equivalent thermal strain method10.1016/j.tws.2020.107033 ↗
21. Prediction and mitigation of out-of-plane welding distortion of a typical block in fabrication of a semi-submersible lifting and disassembly platform10.1016/j.marstruc.2021.102964 ↗
22. Review on finite element analysis of welding deformation and residual stress10.1080/13621718.2017.1361673 ↗
23. Numerical and experimental investigation of the formation mechanism and the distribution of the welding residual stress induced by the hybrid laser arc welding of AH36 steel in a butt joint configuration10.1016/j.jmapro.2020.01.008 ↗
24. Numerical simulation and experimental validation of residual stress and welding distortion induced by laser-based welding processes of thin structural steel plates in butt joint configuration
25. Finite element analysis of metallurgical phase transformations in AA 6056-T4 and their effects upon the residual stress and distortion states of a laser welded T-joint10.1016/j.ijpvp.2010.10.008 ↗
26. Optimal Simulation of Welding Deformation Control Process for Thin-Wall GH3536 Tail Nozzle