Experimental measurements and numerical simulations of distortions of overlap laser-welded thin sheet steel beam structures
| Autor: | Oscar Andersson, Arne Melander, Niclas Palmquist, Nesrin Budak |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Computation 02 engineering and technology Welding 020501 mining & metallurgy law.invention law Shrinkage business.industry Mechanical Engineering Metals and Alloys Laser beam welding Structural engineering Mechanics 021001 nanoscience & nanotechnology Laser Mathematics::Geometric Topology Statistics::Computation Transverse plane 0205 materials engineering Mechanics of Materials Solid mechanics Physics::Accelerator Physics 0210 nano-technology business Beam (structure) |
| Zdroj: | Welding in the World. 61:927-934 |
| ISSN: | 1878-6669 0043-2288 |
| DOI: | 10.1007/s40194-017-0496-z |
| Popis: | Distortions of mild steel structures caused by laser welding were analyzed. One thousand-millimeter U-beam structures were welded as overlap joints with different process parameters and thickness configurations. Final vertical and transverse distortions after cooling were measured along the U-beam. Significant factors, which affect distortions, were identified. Heat input per unit length, weld length, and sheet thickness showed a significant effect on welding distortions. Furthermore, the welding distortions were modeled using FE simulations. A simplified and computationally efficient simulation method was used. It describes the effect of shrinkage of the weld zone during cooling. The simulations show reasonable computation times and good agreement with experiments. |
| Databáze: | OpenAIRE |
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