Fatigue analysis of wire arc additive manufactured (3D printed) components with unmilled surface
2021; Elsevier BV; Volume: 31; Linguagem: Inglês
10.1016/j.istruc.2021.01.068
ISSN2352-0124
AutoresHelen Bartsch, Ronny Kühne, Sandro Citarelli, Simon Schaffrath, Markus Feldmann,
Tópico(s)Additive Manufacturing and 3D Printing Technologies
ResumoFirst investigations have been carried out on the characterisation of the as-welded surface roughness of unmilled wire arc additive manufactured (WAAM) components, followed by an experimental determination of the fatigue strength. Subsequently, randomly based finite-element (FE) simulations are carried out to expand the findings. The statistical characteristics of the surface provide the input values for the Monte-Carlo (MC) simulation. Here, the fatigue strengths of single-wire and multiple-wire welded components have been compared applying the effective notch stress concept performing over 2200 simulations. Finally, a fatigue detail classification for surfaces of WAAM components is given following the principles of EN 1993-1-9 [1].
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