Validation of the EDACC Model for GMAW Process Simulation by Weld Pool Dimension Comparison

Mokrov, Oleg; Simon, Marek Sebastian; Shvartc, Ivan; Sharma, Rahul; Reisgen, Uwe

doi:10.1007/978-3-030-70332-5_5

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…The model for the calculation of the weld pool was realized in Ansys CFX R20 but is not in the focus of this work, and therefore a simplified approach based on the models presented in [16] and [4] was used. As these models are steady-state models, they could not be applied to the transient pulsed process.…”

Section: Model Of the Weld Poolmentioning

confidence: 99%

Validation of evaporation-determined model of arc-cathode coupling in the peak current phase in pulsed GMA welding

Simon¹,

Mokrov²,

Sharma³

et al. 2021

J. Phys. D: Appl. Phys.

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A first experimental validation of the EDACC (evaporation-determined arc-cathode coupling) model is performend by comparing the experimental and simulated current in the peak current phase of a pulsed GMAW (gas metal arc welding) process. For this, the EDACC model was extended to limit the cathode surface temperature to a realistic value of <2400K. The information on the plasma for the EDACC model was gathered from literature and extrapolated and extended according to qualitative reasoning. The information on the cathode surface of the EDACC model was derived from a steady-state simulation of the weld pool, using an averaging approach over time for the energy and current. The weld pool surface temperature was compared to pyrometric measurements, that were performed for this work, and the agreement was found to be fair. The observed agreement between the modelled and experimentally determined current was within 10%. As strong assumptions were made for the comparison, the validation cannot be considered as final, but the assumptions are thoroughly analyzed and discussed. However the critical link between surface temperature, plasma temperature and total current transmitted could be reconstructed.

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Section: Model Of the Weld Poolmentioning

confidence: 99%

Validation of evaporation-determined model of arc-cathode coupling in the peak current phase in pulsed GMA welding

Simon¹,

Mokrov²,

Sharma³

et al. 2021

J. Phys. D: Appl. Phys.

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Quantitative evaluation of SPH in TIG spot welding

Jeske¹,

Simon²,

Semenov

et al. 2022

Comp. Part. Mech.

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While the application of the Smoothed Particle Hydrodynamics (SPH) method for the modeling of welding processes has become increasingly popular in recent years, little is yet known about the quantitative predictive capability of this method. We propose a novel SPH model for the simulation of the tungsten inert gas (TIG) spot welding process and conduct a thorough comparison between our SPH implementation and two finite element method (FEM)-based models. In order to be able to quantitatively compare the results of our SPH simulation method with grid-based methods, we additionally propose an improved particle to grid interpolation method based on linear least-squares with an optional hole-filling pass which accounts for missing particles. We show that SPH is able to yield excellent results, especially given the observed deviations between the investigated FEM methods and as such, we validate the accuracy of the method for an industrially relevant engineering application.

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Validation of the EDACC Model for GMAW Process Simulation by Weld Pool Dimension Comparison

Cited by 2 publications

References 6 publications

Validation of evaporation-determined model of arc-cathode coupling in the peak current phase in pulsed GMA welding

Validation of evaporation-determined model of arc-cathode coupling in the peak current phase in pulsed GMA welding

Quantitative evaluation of SPH in TIG spot welding

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