Abstract. Additive-manufacturing technologies have been gaining tremendously in popularity for some years in the production of single-part series with complex, ...
Numerical simulation of metallic wire arc additive manufacturing (WAAM) M. Graf, K. P. Pradjadhiana, A. Hälsig, Y. H. P. Manurung, and B. Awiszus
Citation: AIP Conference Proceedings 1960, 140010 (2018); doi: 10.1063/1.5035002 View online: https://doi.org/10.1063/1.5035002 View Table of Contents: http://aip.scitation.org/toc/apc/1960/1 Published by the American Institute of Physics
7KH),*85(illustrates the Goldak’s double ellipsoid model ZLWKWKHJHRPHWULFDOFRQGLWLRQVEXWWKHJHRPHWULFDO SDUDPHWHUVDEDQGFFDQKDYHYDU\YDOXHVIRUWKHIURQWRUUHDUTXDGUDQWV>@
140010-5
FIGURE 5. Model of the double ellipsoid heat source by Goldak [7]
QXPHULFDOSDUDPHWHU Heat transfer coefficient metal metal ĮPHWPHW +HDWWUDQVIHUFRHIILFLHQWPHWDOenvironment ĮPHWDLU Environment temperature ࢡHQYLURQPHQW Emissions coefficient İ +HDWVRXUFH D E F I F U
FIGURE 6. Temperature distribution after unidirectional welding of 4 layers and pause time of 15 s after each layer (welding direction: –z) (left) and temperature evolution of one point in layer 4 (right)