Numerical simulation of transient temperature field during laser keyhole welding of 304 stainless steel sheet

A three-dimensional transient numerical model was developed to study the temperature field and molten pool shape during continuous laser keyhole welding. The volume-of-fluid (VOF) method was employed to track free surfaces. Melting and evaporation enthalpy, recoil pressure, surface tension, and ener...

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Bibliographic Details
Published in:Optics and laser technology 2011-06, Vol.43 (4), p.870-873
Main Authors: Wang, Renping, Lei, Yongping, Shi, Yaowu
Format: Article
Language:English
Subjects:
Evaporation
Keyholes
Laser beam welding
Laser welding
Mathematical models
Melting
Numerical simulation
Temperature distribution
Temperature field
Weld metal pool
Welding
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Summary:A three-dimensional transient numerical model was developed to study the temperature field and molten pool shape during continuous laser keyhole welding. The volume-of-fluid (VOF) method was employed to track free surfaces. Melting and evaporation enthalpy, recoil pressure, surface tension, and energy loss due to evaporating materials were considered in this model. The enthalpy-porosity technique was employed to account for the latent heat during melting and solidification. Temperature fields and weld pool shape were calculated using FLUENT software. The calculated weld dimensions agreed reasonable well with the experimental results. The effectiveness of the developed computational procedure had been confirmed.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2010.10.007