Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Calibrating uncertain parameters in melt pool simulations of additive manufacturing

Journal Article · · Computational Materials Science
Melt pool scale numerical modeling of additive manufacturing (AM) processes can provide predictive capabilities and theoretical insight into the process-property-structure-performance relationships for AM parts. Despite capabilities of numerical models to solve complex multi-physics problems, it is often important to consider a tradeoff between detailed physics and computational cost. Therefore, sources of uncertainty in both experimental conditions and the parameters needed for modeling require models to be validated against empirical evidence. Here, a method is proposed to calibrate uncertain parameters used in continuum-scale melt pool models for powder bed fusion (PBF) AM. Both a simplified heat transfer model and a heat transfer and fluid flow model were investigated. A surrogate model and Markov chain-based optimization algorithm calibrated melt pool geometry for models within experimental variation of the target melt pool width and depth from the NIST AM-Bench 2018-02 dataset. The melt pool temperature distributions, solidification parameters, and simulated multi-layer solidification microstructures were compared between the two models. Similar results from both models indicate that calibrated, lower fidelity numerical models may be used in place of higher fidelity models to generate melt pool solidification data. Finally, these calibrated models therefore enable lower computational cost melt pool simulations without a noticeable decrease in simulation accuracy for grain-scale microstructure simulations.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1901636
Journal Information:
Computational Materials Science, Journal Name: Computational Materials Science Vol. 218; ISSN 0927-0256
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (38)

Welding Metallurgy book October 2002
A new finite element model for welding heat sources journal June 1984
Gaussian process-based surrogate modeling framework for process planning in laser powder-bed fusion additive manufacturing of 316L stainless steel journal September 2017
Build orientation optimization for additive manufacturing of functionally graded material objects journal January 2018
Heat source model calibration for thermal analysis of laser powder-bed fusion journal January 2020
Differential Evolution Markov Chain with snooker updater and fewer chains journal October 2008
Interlaboratory Study for Nickel Alloy 625 Made by Laser Powder Bed Fusion to Quantify Mechanical Property Variability journal June 2016
Using JMatPro to model materials properties and behavior journal December 2003
Outcomes and Conclusions from the 2018 AM-Bench Measurements, Challenge Problems, Modeling Submissions, and Conference journal February 2020
Measurements of Melt Pool Geometry and Cooling Rates of Individual Laser Traces on IN625 Bare Plates journal February 2020
In Situ Measurements of Melt-Pool Length and Cooling Rate During 3D Builds of the Metal AM-Bench Artifacts journal February 2020
Location-Specific Microstructure Characterization Within IN625 Additive Manufacturing Benchmark Test Artifacts journal March 2020
A coupled finite element-cellular automaton model for the prediction of dendritic grain structures in solidification processes journal July 1994
A 3D Cellular Automaton algorithm for the prediction of dendritic grain growth journal May 1997
Laser powder-bed fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation zones journal April 2016
In situ absorptivity measurements of metallic powders during laser powder-bed fusion additive manufacturing journal December 2017
Simulation of metal additive manufacturing microstructures using kinetic Monte Carlo journal July 2017
Heat and fluid flow in additive manufacturing – Part II: Powder bed fusion of stainless steel, and titanium, nickel and aluminum base alloys journal July 2018
Numerical microstructure prediction by a coupled finite element cellular automaton model for selective electron beam melting journal May 2019
ExaCA: A performance portable exascale cellular automata application for alloy solidification modeling journal November 2022
Mesoscopic simulation model of selective laser melting of stainless steel powder journal November 2014
Effects of scanning pattern on the grain structure and elastic properties of additively manufactured 316L austenitic stainless steel journal January 2022
Remarks on Refractive Index Mixture Rules journal April 1965
Evolution of solidification texture during additive manufacturing journal November 2015
A tensorial approach to computational continuum mechanics using object-oriented techniques journal January 1998
Sparse thermal data for cellular automata modeling of grain structure in additive manufacturing journal June 2020
Time-Resolved Absorptance and Melt Pool Dynamics during Intense Laser Irradiation of a Metal journal October 2018
Dynamic Laser Absorptance Measured in a Geometrically Characterized Stainless-Steel Powder Layer journal February 2020
Ultrafast X-ray imaging of laser–metal additive manufacturing processes journal August 2018
A review of computational modeling in powder-based additive manufacturing for metallic part qualification journal November 2018
An Integrated Approach to Additive Manufacturing Simulations Using Physics Based, Coupled Multiscale Process Modeling journal October 2014
Identifying Uncertainty in Laser Powder Bed Fusion Additive Manufacturing Models journal September 2016
Sensitivity of Thermal Predictions to Uncertain Surface Tension Data in Laser Additive Manufacturing journal October 2020
ExaAM: Metal additive manufacturing simulation at the fidelity of the microstructure journal January 2022
Correlation between solidification parameters and weld microstructures journal January 1989
Heat transfer and fluid flow in additive manufacturing journal November 2013
Direct measurements of laser absorptivity during metal melt pool formation associated with powder bed fusion additive manufacturing processes journal August 2018
In Situ Thermography of the Metal Bridge Structures Fabricated for the 2018 Additive Manufacturing Benchmark Test Series (AM-Bench 2018) journal January 2020