[INVITED] An overview of the state of art in laser welding simulation

Dal, Morgan; Fabbro, R.

doi:10.1016/j.optlastec.2015.09.015

Cited by 149 publications

(64 citation statements)

References 65 publications

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“…The surface heat source model is more accurate for conduction welding since in this mode the energy is applied to the component surface, while the volumetric heat source is more adapted for keyhole welding, with the energy being directed inside the medium through the keyhole [3]. The volumetric heat sources are the most studied distribution for over the years [16]. Recent volumetric heat source models are combinations of double ellipsoidal, cylindrical, and conical models [17].…”

Section: Heat Source Modelmentioning

confidence: 99%

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Prediction of Weld Joint Shape and Dimensions in Laser Welding Using a 3D Modeling and Experimental Validation

Jacques¹,

Ouafi²

2017

MSA

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This paper presents an experimentally validated weld joint shape and dimensions predictive 3D modeling for low carbon galvanized steel in butt-joint configurations. The proposed modelling approach is based on metallurgical transformations using temperature dependent material properties and the enthalpy method. Conduction and keyhole modes welding are investigated using surface and volumetric heat sources, respectively. Transition between the heat sources is carried out according to the power density and interaction time. Simulations are carried out using 3D finite element model on commercial software. The simulation results of the weld shape and dimensions are validated using a structured experimental investigation based on Taguchi method. Experimental validation conducted on a 3 kW Nd: YAG laser source reveals that the modelling approach can provide not only a consistent and accurate prediction of the weld characteristics under variable welding parameters and conditions but also a comprehensive and quantitative analysis of process parameters effects. The results show great concordance between predicted and measured values for the weld joint shape and dimensions.

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Section: Heat Source Modelmentioning

confidence: 99%

“…Different methods can be used to develop a finite element model of laser welding that considers phase change [16]. The most accurate way that avoids multi-physical phenomena is to consider temperature-dependent thermo-physical material properties (density, specific heat, and thermal conductivity).…”

Section: Phase Transitionmentioning

confidence: 99%

Prediction of Weld Joint Shape and Dimensions in Laser Welding Using a 3D Modeling and Experimental Validation

Jacques¹,

Ouafi²

2017

MSA

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“…Extensive literature is available on the modeling and exploitation of heat sources for different welding technologies including surface or volumetric heat source models [12,[20][21][22][23][24][25][26][27]. For numerical simulation of laser beam welding, various volumetric heat source models have been tested and applied, ranging from Gaussian ellipsoidal heat source, Goldak's double-ellipsoidal heat source, cylindrical heat source, and cone-shaped source to some of their modifications and combinations [22,[28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Design of Laser Welding Parameters for Joining Ti Grade 2 and AW 5754 Aluminium Alloys Using Numerical Simulation

Behúlová

Babalová

Sahul

2017

Advances in Materials Science and Engineering

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Joining of dissimilar Al-Ti alloys is very interesting from the point of view of weight reduction of components and structures in automotive or aerospace industries. In the dependence on cooling rate and chemical composition, rapid solidification of Al-Ti alloys during laser welding can lead to the formation of metastable phases and brittle intermetallic compounds that generally reduce the quality of produced weld joints. The paper deals with design and testing of welding parameters for preparation of weld joints of two sheets with different thicknesses from titanium Grade 2 and AW 5754 aluminium alloy. Temperature fields developed during the formation of Al-Ti butt joints were investigated by numerical simulation in ANSYS software. The influence of laser welding parameters including the laser power and laser beam offset on the temperature distribution and weld joint formation was studied. The results of numerical simulation were verified by experimental temperature measurement during laser beam welding applying the TruDisk 4002 disk laser. The microstructure of produced weld joints was assessed by light microscopy and scanning electron microscopy. EDX analysis was applied to determine the change in chemical composition across weld joints. Mechanical properties of weld joints were evaluated using tensile tests and Vickers microhardness measurements.

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“…However, the key problem of joining titanium and steel, particularly of austenitic class, by melting using a laser beam is yet to be solved in practice, despite the numerous studies on joining dissimilar metals by rolling, friction, explosion, etc. [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Modeling of laser welding of steel and titanium plates with a composite insert

Isaev

Черепанов

Shapeev

2017

AIP Conference Proceedings

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Abstract. A 3D model of laser welding proposed before by the authors was extended to the case of welding of metallic plates made of dissimilar materials with a composite multilayer intermediate insert. The model simulates heat transfer in the welded plates and takes into account phase transitions. It was proposed to select the composition of several metals and dimensions of the insert to avoid the formation of brittle intermetallic phases in the weld joint negatively affecting its strength properties. The model accounts for key physical phenomena occurring during the complex process of laser welding. It is capable to calculate temperature regimes at each point of the plates. The model can be used to select the welding parameters reducing the risk of formation of intermetallic plates. It can forecast the dimensions and crystalline structure of the solidified melt. Based on the proposed model a numerical algorithm was constructed. Simulations were carried out for the welding of titanium and steel plates with a composite insert comprising four different metals: copper and niobium (intermediate plates) with steel and titanium (outer plates). The insert is produced by explosion welding. Temperature fields and the processes of melting, evaporation, and solidification were studied.

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[INVITED] An overview of the state of art in laser welding simulation

Cited by 149 publications

References 65 publications

Prediction of Weld Joint Shape and Dimensions in Laser Welding Using a 3D Modeling and Experimental Validation

Prediction of Weld Joint Shape and Dimensions in Laser Welding Using a 3D Modeling and Experimental Validation

Design of Laser Welding Parameters for Joining Ti Grade 2 and AW 5754 Aluminium Alloys Using Numerical Simulation

Modeling of laser welding of steel and titanium plates with a composite insert

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