Fatigue analysis of wire arc additive manufactured (3D printed) components with unmilled surface

被引：57

作者：

Bartsch, Helen ^{[1
]}

Kuehne, Ronny ^{[1
]}

Citarelli, Sandro ^{[1
]}

Schaffrath, Simon ^{[1
]}

Feldmann, Markus ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Steel Construct, Aachen, Germany

来源：

STRUCTURES | 2021年 / 31卷

关键词：

Additive manufacturing; Wire arc additive manufacturing; 3D printing; Roughness characterisation; Effective notch stress concept; PROCESS PARAMETERS; MICROSTRUCTURE; PARTS; CONSTRUCTION; FABRICATION;

D O I：

10.1016/j.istruc.2021.01.068

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

First 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].

引用

页码：576 / 589

页数：14

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