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Investigation on welding sequence of I-beam by hybrid inversion
- Source :
- Marine Structures. 62:23-39
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- A thermal-mechanical model based on welding experiment and finite element (FE) method was developed for welding deformation analysis and welding sequence optimization of arc welding process used in hull steel structure forming process. By means of digital image correlation (DIC) and electrical measurement method, the deformation of T-beam was measured, and the equivalent heat source parameter (EHSP) was inversed by an optimization algorithm. The purpose of the inversion is to match the numerical results with the experiment results, so the EHSP has taken account into the influence of various factors on the welding deformation and residual stress. Thus, the developed method can avoid using the highly physical nonlinearity algorithm when considering the complex material constitutive and phase transformation process, which greatly improves the efficiency of calculation. Finally, the EHSP obtained from the hybrid inversion is applied to investigate the influence of welding sequence on welding deformation and residual stress in I-beam. This method can be applied to other metal materials and weld form.
- Subjects :
- 0209 industrial biotechnology
Digital image correlation
Materials science
Mechanical Engineering
Forming processes
Mechanical engineering
Ocean Engineering
02 engineering and technology
Welding
021001 nanoscience & nanotechnology
Mathematics::Geometric Topology
Finite element method
Statistics::Computation
law.invention
I-beam
020901 industrial engineering & automation
Mechanics of Materials
Residual stress
law
Solid mechanics
Physics::Accelerator Physics
General Materials Science
Arc welding
0210 nano-technology
Subjects
Details
- ISSN :
- 09518339
- Volume :
- 62
- Database :
- OpenAIRE
- Journal :
- Marine Structures
- Accession number :
- edsair.doi...........2f0799148eb8e933b48de1996cea4d33