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Experimental measurements and numerical simulations of distortions of overlap laser-welded thin sheet steel beam structures
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
RISE - Research Institutes of Sweden, Swerea, Swerea KIMAB AB. KTH Royal Institute of Technology, Sweden.
Volvo Car Corporation, Sweden.
2017 (engelsk)Inngår i: Welding in the World, ISSN 0043-2288, E-ISSN 1878-6669, Vol. 61, nr 5, 927-934 s.Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2017. Vol. 61, nr 5, 927-934 s.
Emneord [en]
Distortions, FE simulation, Laser beam welding, Mild steel, Volume shrinkage method, Carbon steel, Distortion (waves), Electric distortion, Finite element method, Laser beams, Shrinkage, Steel, Welds, Beam structures, Computation time, Computationally efficient, FE-simulation, Per unit length, Process parameters, Volume shrinkage, Welding distortion, Welding
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Identifikatorer
URN: urn:nbn:se:ri:diva-31352DOI: 10.1007/s40194-017-0496-zScopus ID: 2-s2.0-85027870009OAI: oai:DiVA.org:ri-31352DiVA: diva2:1147575
Merknad

Export Date: 6 October 2017; Article; CODEN: WDWRA; Funding details: VINNOVA; Funding text: Recommended for publication by Commission IV - Power Beam Processes This research was supported by the Swedish Governmental Agency for Innovation Systems, VINNOVA, through the project LaserLight (2012-03656) which is a part of the FFI program.

Tilgjengelig fra: 2017-10-06 Laget: 2017-10-06 Sist oppdatert: 2017-10-06bibliografisk kontrollert

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