A new two-dimensional (2D) transient finite element model was developed to study the thermal behavior during the multilayer deposition by the laser engineered net shaping rapid fabrication process. The reliability of the 2D model was evaluated by comparing the results obtained from the 2D model with those computed by a previously developed three-dimensional (3D) model. It is found that the predicted temperature distributions and the cooling rates in the molten pool and its surrounding area agree well with the experiment data available in literature and with the previous results calculated with the 3D model. It is also concluded that, for the geometry analyzed in this study, the 2D model can be used with good accuracy, instead of the computationally much more expensive 3D model, if certain precautions are taken to compensate for the 3D effects of the substrate. In particular, a 2D model could be applied to an in situ calculation of the thermal behavior of the deposited part during the fabrication, allowing dynamic control of the process. The 2D model is also applied to study the effects of substrate size and idle time on the thermal field and size of the molten pool.
Skip Nav Destination
e-mail: felicelli@me.msstate.edu
Article navigation
Research Papers
Comparison of Two-Dimensional and Three-Dimensional Thermal Models of the LENS® Process
H. Yin,
H. Yin
Mechanical Engineering Department,
Mississippi State University
, Mississippi State, MS 39762
Search for other works by this author on:
L. Wang,
L. Wang
Center for Advanced Vehicular Systems,
Mississippi State University
, Mississippi State, MS 39762
Search for other works by this author on:
S. D. Felicelli
S. D. Felicelli
Mechanical Engineering Department,
e-mail: felicelli@me.msstate.edu
Mississippi State University
, Mississippi State, MS 39762
Search for other works by this author on:
H. Yin
Mechanical Engineering Department,
Mississippi State University
, Mississippi State, MS 39762
L. Wang
Center for Advanced Vehicular Systems,
Mississippi State University
, Mississippi State, MS 39762
S. D. Felicelli
Mechanical Engineering Department,
Mississippi State University
, Mississippi State, MS 39762e-mail: felicelli@me.msstate.edu
J. Heat Transfer. Oct 2008, 130(10): 102101 (7 pages)
Published Online: August 8, 2008
Article history
Received:
May 24, 2007
Revised:
January 29, 2008
Published:
August 8, 2008
Citation
Yin, H., Wang, L., and Felicelli, S. D. (August 8, 2008). "Comparison of Two-Dimensional and Three-Dimensional Thermal Models of the LENS® Process." ASME. J. Heat Transfer. October 2008; 130(10): 102101. https://doi.org/10.1115/1.2953236
Download citation file:
Get Email Alerts
Cited By
Related Articles
An Analysis of the Effect of Laser Beam Geometry on Laser Transformation Hardening
J. Manuf. Sci. Eng (August,2006)
Finite Element Predictions of Temperature Distributions in a Multipass Welded Piping Branch Junction
J. Pressure Vessel Technol (February,2005)
Thermal Behavior and Geometry Model of Melt Pool in Laser Material Process
J. Heat Transfer (September,2005)
Two-Dimensional Transient Heat Transfer Model for High-Temperature Laser-Scanning Confocal Microscopy
J. Heat Transfer (January,2022)
Related Proceedings Papers
Related Chapters
Data Tabulations
Structural Shear Joints: Analyses, Properties and Design for Repeat Loading
Control and Operational Performance
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Even a Watched Pot Boils Eventually
Hot Air Rises and Heat Sinks: Everything You Know about Cooling Electronics Is Wrong