| Reference : THE EVOLUTION OF THERMAL DISTORTION AND STRESSES AT MACRO SCALE FOR METAL ADDITIVELY ... |
| Scientific congresses, symposiums and conference proceedings : Unpublished conference | |||
| Engineering, computing & technology : Materials science & engineering | |||
| Physics and Materials Science | |||
| http://hdl.handle.net/10993/53982 | |||
| THE EVOLUTION OF THERMAL DISTORTION AND STRESSES AT MACRO SCALE FOR METAL ADDITIVELY MANUFACTURED PART | |
| English | |
Mashhood, Muhammad  [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >] | |
| Zilian, Andreas [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >] | |
| Peters, Bernhard [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >] | |
| Baroli, Davide [Euler Institute, Università della Svizzera italiana] | |
| Wyart, Eric [Réseau LIEU, Belgium] | |
| 5-Feb-2022 | |
| No | |
| International | |
| 2nd Workshop on Structural Integrity of Additively Manufactured Materials - SIAMM22 | |
| 04-05-2022 to 05-02-2022 | |
| [en] The Selective Laser Melting (SLM) involves the melting of the metal powder
resulting in melt-pool. When this very melt-pool solidifies, the solidified metal undergoes cooling and reheating in the presence of air and multiple laser passes for continuous material consolidation. In result of such thermal cycles, manufactured part develops the permanent thermal deformation and residual stresses[1]. The current study, involves the evaluation of part deformation and development of residual stresses at macro scale. The multi-physics solution is performed by coupling of transient thermal heat equation with structural solver equipped with the elastoplastic material model. The FeniCS[2] Finite Element Modelling platform is utilized in the development. To mimic the consolidation of material, the elements are activated as per the pattern of metal consolidation under the influence of G-code. The results are gathered to track down the evolution of plastic strain and residual stresses throughout the course of part manufacturing. The significance of temperature dependent material properties is also focused. The generation of permanent deformation and the thermal stress is studied among the cases of constant material properties and the material properties as a function of temperature. Moreover, the the upscaling of material deposition and the parallelization of the simulation platform is currently under focus for enhanced computational efficiency of the developed algorithm. | |
| [en] [1] R.K. Ganeriwala, M. Strantza, W.E. King, B. Clausen, T.Q. Phan, L.E.
Levine, D.W. Brown, N.E. Hodge, Evaluation of a thermomechanical modelfor prediction of residual stress during laser powder bed fusion of Ti-6Al- 4V, Additive Manufacturing(2019), Vol. 27., 489–502. [2] M. S. Alnaes, J. Blechta, J. Hake, A. Johansson, B. Kehlet, A. Logg, C. Richardson, J. Ring, M. E. Rognes and G. N. Wells, The FEniCS Project Version 1.5, Archive of Numerical Software(2015), Vol. 3., 100:9–23. | |
| http://hdl.handle.net/10993/53982 |
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