Seminar on Additive Manufacturing: Multi-physics Modeling Techniques and Simulation framework
Prof Moubin Liu Vice Dean College of Engineering, Peking University This seminar will be chaired by Prof Li Hua. |
| Seminar Abstract |
Powder-based additive manufacturing techniques, such as selective laser melting (SLM) and Direct Deposition (LDD) have gained great popularity in recent years. However, experimental observation and theoretical analysis of the powder deposition, melting and solidification process are very challenging. Powder-scale computational models can reproduce the multi-physics process of AM, help to optimize process parameters, and to control the quality of the AM products. During recent years, we developed a comprehensive simulation framework for powder-based AM, which integrates a number of novel numerical techniques including 1) semi-resolved CFD-DEM for modeling powder transport/deposition, 2) semi-resolved VOF-DEM for simultaneous modeling of powder rigid motion and molten pool evolution, 3) GPU-based SPH method for modeling powder melting and solidification, and 4) data-driven dimensional analysis for quick optimization of process parameters. The effectiveness of the simulation framework has been demonstrated in a series of industrial applications. |
| Speaker’s Biography |
Moubin Liu is a Tenured Full Professor, and the Vice Dean of the College of Engineering, Peking University. His research interests including computational fluid-structure interaction, meshfree particle methods, numerical modeling of advanced manufacturing. He authored two popular monographs, including the first-ever book on the Smoothed Particle Hydrodynamics. He published over 150 SCI indexed papers with 10 ESI highly cited papers. He has received a number of awards from universities and scientific organizations worldwide including the International Computational Award (2019), ICACM Computational Mechanics Award (2018), First Prize in Natural Sciences from the Ministry of Education (2017), the 100 Talent Program Award from CAS (2009), and the Lee Kuan Yew Fellowship Award (2005). He is the associate editor of EABE, IJCM and CPM and the editorial Board Member of several other international journals, and has been consecutively listed as a “Most Cited Chinese Researcher” by Elsevier, and among the Top 2% Scientists Worldwide by Stanford University. |