Finite Element Simulation of Residual Stress Induced by High Energy Beam Welding in Dual Phase Steel

Komerla, Krishna Chaitanya; Gach, Stefan; Akyel, Fatma; Vossel, Thomas; Reisgen, Uwe; Bleck, Wolfgang

doi:10.1007/s40516-020-00112-4

Cited by 3 publications

(3 citation statements)

References 34 publications

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“…A near-surface region dominated by heat conduction is modeled on the Gaussian-normally distributed double ellipsoidal volume heat source according to Goldak. For the UP process, a setup of the model is usually done purely according to Goldak [9][10][11].…”

Section: Equivalent Heat Sourcementioning

confidence: 99%

Development of a robust welding process for electron beam welding of thick plates for construction of offshore wind turbines

Reisgen,

Olschok,

Evers

2024

Materialwissenschaft Werkst

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Due to its high energy intensity and the associated high welding depth, electron beam welding is particularly suitable for welding steel plates with high wall thicknesses. These are used, for example, in offshore wind power systems. However, due to the cooling conditions, the required cold toughness for offshore applications is often not achieved. The aim is to develop S355 ML steels – within the EN10025 4 standard – for welding monopiles for wind turbines. For this purpose, three parameters with different energy input are developed on three steels. The tests are carried out on plates with a wall thickness of 80 mm, whereby a full penetration weld must be achieved. The resulting top and bottom bead of the welds meet the standard DIN EN ISO 13919‐1. The parameters have an energy per unit length of 9.5 kJ mm−1 to 15.5 kJ mm−1. The resulting weld seams have an average width of 5.5 mm to 7.5 mm, and burn‐off of the manganese alloy element is observed, particularly on the top side of the seam. In addition, T8/5 times close to the weld seam of 11 s to 27 s are estimated using a simulation.

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Section: Equivalent Heat Sourcementioning

confidence: 99%

Development of a robust welding process for electron beam welding of thick plates for construction of offshore wind turbines

Reisgen,

Olschok,

Evers

2024

Materialwissenschaft Werkst

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show abstract

“…The modelled finite element mesh is defined as a function of the compromise between computational time and model accuracy, so it is usual to use more refined elements on the weld region and a coarser mesh in the rest of the structure (Komerla et al, 2020;Tsirkas et al, 2003). Correard et al (2016) simulated, through finite element analyses, dissimilar laser welding between DP600 and TRIP750 steel sheets, employing a Gaussian energy distribution, 1.5 mm keyhole penetration and 85% absorptivity.…”

Section: Laser Welding Of Dual Phase Sheetsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of laser welding on microstructure and mechanical behaviour of dual phase 600 steel sheets

Mansur¹,

Mansur²,

Carvalho

et al. 2021

Heliyon

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Dual Phase steels are one of the most used advanced high-strength materials in the industry, due to its combination of a ductile ferritic matrix and disperse hard martensite islands, which provide outstanding mechanical properties for components to be cold stamped. This work investigated fiber laser welding applicability in Dual Phase 600 1.6 mm thick steel sheets, evaluating potential welding impacts on properties of the material for industrial applications. A first set of bead-on-plate welds was generated to define best parameters for subsequent tests. A second set was prepared, consisting of butt joints welded in the optimized condition. Weld microstructure was characterized as 100% martensitic at fusion zone (FZ), with growing fractions of ferrite at Heat Affected Zone (HAZ) as one moves away from fusion line. Hardness is around 60% higher at FZ than at BM, being maximum at supercritical HAZ due to its highly refined microstructure and HAZ softening was not observed. Tensile and Erichsen cupping tests presented similar strength results between welded and non-welded specimens, with slight ductility reduction. Finally, numeric simulations based on Finite Element Analysis were carried out to estimate temperature evolution, phase proportions, residual stresses and distortion levels, achieving excellent agreement with experimental results.

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Experimental investigation and numerical simulation of welding residual stress in orthotropic steel deck with diaphragm considering solid-state phase transformation

Qiang

Liao

et al. 2022

Engineering Structures

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Finite Element Simulation of Residual Stress Induced by High Energy Beam Welding in Dual Phase Steel

Cited by 3 publications

References 34 publications

Development of a robust welding process for electron beam welding of thick plates for construction of offshore wind turbines

Development of a robust welding process for electron beam welding of thick plates for construction of offshore wind turbines

Effect of laser welding on microstructure and mechanical behaviour of dual phase 600 steel sheets

Experimental investigation and numerical simulation of welding residual stress in orthotropic steel deck with diaphragm considering solid-state phase transformation

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