| Reference : Thermo-mechanical coupling and part-level analysis for additive manufacturing processes |
| Scientific congresses, symposiums and conference proceedings : Unpublished conference | |||
| Engineering, computing & technology : Multidisciplinary, general & others | |||
| Physics and Materials Science | |||
| http://hdl.handle.net/10993/53984 | |||
| Thermo-mechanical coupling and part-level analysis for additive manufacturing processes | |
| English | |
Mashhood, Muhammad  [University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE) >] | |
| Baroli, Davide [Euler Institute, Università della Svizzera italiana] | |
| 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) >] | |
| 13-Jan-2021 | |
| No | |
| 14th World Congress in Computational Mechanics (WCCM) & ECCOMAS Congress 2020 | |
| 11-01-2021 to 15-01-2021 | |
| [en] The additive layer manufacturing (ALM) process is an advanced and promising technique for future
manufacturing of complex metal parts and components[1]. The significant and challenging factors that determine the final material characteristics are the thermal distortion and thermal stresses in the specimen, which develop during cooling and shrinkage of the solid phase part layer when the laser has passed. In principle, the mechanical and thermal properties also vary with material temperature. The laser as a heat source is modelled in the heat equation for transient thermal analysis. The J2 elasto-plastic material model is used under the infinite small strain assumption. While the thermomechanical coupling is based upon quasi static analysis approach. Here the thermal loads overlaying with thermal conduction are applied at the specimen, which undergoes elasto-plastic deformation. For descretization of the problem, the Finite Element Analysis (FEA) platform deal.ii [2] is utilized. This primarily not only predicts the part-scale temperature profile and distortion displacements but also trends of thermal stress state as a result of the laser heat source applied to a solid Ti-6Al-4V specimen. Consecutively, the basic multiphysics thermomechanical system is established. This can soon be further developed for adaptive FEA and elements activation in the ALM process with added material layers. | |
| [en] [1] Hussein, A. and Hao, L. and Yan, C. and Everson, R. Finite element simulation of the temperature
and stress fields in single layers built without-support in selective laser melting. Materials & Design (1980-2015), (2013), 52:638–647. [2] Bangerth, W. and Hartmann, R. and Kanschat, G. deal.II – a General Purpose Object Oriented Finite Element Library. ACM Trans. Math. Softw.(2007), Vol. 33., 4:24/1–24/27. | |
| http://hdl.handle.net/10993/53984 |
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