Computational Techniques in Numerical Simulations of Arc and Laser Welding Processes
| Autor: | Tomasz Kik |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Computer science Mechanical engineering 02 engineering and technology Welding lcsh:Technology Article law.invention 020901 industrial engineering & automation Software stresses law General Materials Science SYSWELD lcsh:Microscopy Shrinkage Simple (philosophy) lcsh:QC120-168.85 numerical analyses Flexibility (engineering) FEM lcsh:QH201-278.5 business.industry lcsh:T Laser beam welding 021001 nanoscience & nanotechnology Finite element method lcsh:TA1-2040 computational techniques lcsh:Descriptive and experimental mechanics displacements Transient (oscillation) lcsh:Electrical engineering. Electronics. Nuclear engineering simulations 0210 nano-technology business lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials Volume 13 Issue 3 Materials, Vol 13, Iss 3, p 608 (2020) |
| ISSN: | 1996-1944 |
| Popis: | The article presents a comparison of modern computational techniques used in numerical analyses of welding processes. The principles of the &ldquo transient&rdquo technique calculations with a moving heat source, the &ldquo macro-bead&rdquo (MBD) technique, with an imposed thermal cycle on a selected weld bead section and the &ldquo local&ndash global&rdquo approach with shrinkage calculation technique were described. They can be used, depending on the variant chosen, both for individual, simple weld joints and those made of many beads or constructions containing dozens of welds and welded elements. Differences in the obtained results and time needed to perform calculations with four different calculation examples of single and multipass arc and laser beam welding processes were presented. The results of calculations of displacements and stresses distributions in the welded joints using various computational techniques were compared, as well as the calculation times with the described techniques. The numerical analyses in the SYSWELD software package have shown the differences between the described computational techniques, as well as an understanding of the benefits and disadvantages of using each of them. This knowledge allows preparing an efficient and fast optimization of the welding processes, often aimed at minimizing deformations in the first place, as well as detection of potential defects of both simple and complex welded structures. In general, the possibilities and flexibility of modern numerical calculation software have been presented. |
| Databáze: | OpenAIRE |
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