Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fracture locus of additively manufactured AlSi10Mg alloy
https://orcid.org/0000-0001-8463-0568
https://orcid.org/0000-0002-3386-8012
Abstract In cellular structures, fracture occurs at various locations due to localized complex stress- and/or strain-state. Using the failure strain obtained from a conventional tensile test, the localized failure in cellular materials cannot be adequately predicted through finite element analysis owing to localized triaxial stress-state. Moreover, complex build orientation of different ligaments influences the macroscopic performance of cellular structures considerably. In order to accurately predict the failure of cellular structures using numerical approach, failure strain with respect to both the stress triaxiality and the build orientation ought to be considered. The fracture loci of Laser Powder Bed Fusion (LPBF) fabricated AlSi10Mg alloy were determined experimentally for different build orientations to develop a predictive capability. Moreover, quasi-static compression tests were performed on an additively manufactured re-entrant cellular structures and the experimental results were corroborated by the numerical predictions obtained using fracture loci. The numerical model which considers triaxial fracture locus predicts the deformation mode and the fracture location of the re-entrant structure more accurately than the model that considers a simple uniaxial tensile failure.
Highlights Fracture loci for SLM printed AlSi10Mg were constructed through various coupon tests. Dependency of fracture locus on build orientation was limited. Compression test was performed on a re-entrant structure printed using the same alloy powder and printing process. The FE model using a triaxial fracture locus could predict the mechanical response of a re-entrant structure reasonably well. Significance of employing a fracture locus to predict the behaviour of a 3D printed cellular structure is demonstrated.
Fracture locus of additively manufactured AlSi10Mg alloy
https://orcid.org/0000-0001-8463-0568
https://orcid.org/0000-0002-3386-8012
Abstract In cellular structures, fracture occurs at various locations due to localized complex stress- and/or strain-state. Using the failure strain obtained from a conventional tensile test, the localized failure in cellular materials cannot be adequately predicted through finite element analysis owing to localized triaxial stress-state. Moreover, complex build orientation of different ligaments influences the macroscopic performance of cellular structures considerably. In order to accurately predict the failure of cellular structures using numerical approach, failure strain with respect to both the stress triaxiality and the build orientation ought to be considered. The fracture loci of Laser Powder Bed Fusion (LPBF) fabricated AlSi10Mg alloy were determined experimentally for different build orientations to develop a predictive capability. Moreover, quasi-static compression tests were performed on an additively manufactured re-entrant cellular structures and the experimental results were corroborated by the numerical predictions obtained using fracture loci. The numerical model which considers triaxial fracture locus predicts the deformation mode and the fracture location of the re-entrant structure more accurately than the model that considers a simple uniaxial tensile failure.
Highlights Fracture loci for SLM printed AlSi10Mg were constructed through various coupon tests. Dependency of fracture locus on build orientation was limited. Compression test was performed on a re-entrant structure printed using the same alloy powder and printing process. The FE model using a triaxial fracture locus could predict the mechanical response of a re-entrant structure reasonably well. Significance of employing a fracture locus to predict the behaviour of a 3D printed cellular structure is demonstrated.
Fracture locus of additively manufactured AlSi10Mg alloy
https://orcid.org/0000-0001-8463-0568
https://orcid.org/0000-0002-3386-8012
Abstract In cellular structures, fracture occurs at various locations due to localized complex stress- and/or strain-state. Using the failure strain obtained from a conventional tensile test, the localized failure in cellular materials cannot be adequately predicted through finite element analysis owing to localized triaxial stress-state. Moreover, complex build orientation of different ligaments influences the macroscopic performance of cellular structures considerably. In order to accurately predict the failure of cellular structures using numerical approach, failure strain with respect to both the stress triaxiality and the build orientation ought to be considered. The fracture loci of Laser Powder Bed Fusion (LPBF) fabricated AlSi10Mg alloy were determined experimentally for different build orientations to develop a predictive capability. Moreover, quasi-static compression tests were performed on an additively manufactured re-entrant cellular structures and the experimental results were corroborated by the numerical predictions obtained using fracture loci. The numerical model which considers triaxial fracture locus predicts the deformation mode and the fracture location of the re-entrant structure more accurately than the model that considers a simple uniaxial tensile failure.
Highlights Fracture loci for SLM printed AlSi10Mg were constructed through various coupon tests. Dependency of fracture locus on build orientation was limited. Compression test was performed on a re-entrant structure printed using the same alloy powder and printing process. The FE model using a triaxial fracture locus could predict the mechanical response of a re-entrant structure reasonably well. Significance of employing a fracture locus to predict the behaviour of a 3D printed cellular structure is demonstrated.
Fracture locus of additively manufactured AlSi10Mg alloy
Logakannan, Krishna Prasath (Autor:in) / Ruan, Dong (Autor:in) / Rengaswamy, Jayaganthan (Autor:in) / Kumar, S. (Autor:in) / Ramachandran, Velmurugan (Autor:in)
Thin-Walled Structures ; 184
11.12.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2018
Nano-level mechanical and tribological behavior of additively manufactured AlSi10Mg plates
| Springer Verlag | 2023