|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||A-17: Verification of Numerically Calculated Cooling Rates of Powder Bed Additive Manufacturing
||Mustafa Megahed, Hans-Wilfried Mindt, Nicholas Lavery, Stephen Brown
|On-Site Speaker (Planned)
In an effort to verify and validate models describing melt pool behavior the results of two different algorithms are compared: Lattice Boltzmann Method and Finite Volume Computational Fluid Dynamics. Both codes were developed separately by two different independent teams. A reference benchmark is defined with corresponding conditions is defined. The physical assumptions are aligned as far as possible to enable the verification effort. The melt pool characteristics and the thermal cycles are compared and form the criteria by which the codes are verified against one another.
The results obtained are found to very comparable verifying the computational findings reported. Among other process related information the extremely high heating and cooling rates are confirmed to be in the order of millions of degrees per second.
||Planned: A print-only volume