报告名称：金属增材制造的多物理场建模

报告时间：2021年12月4日，周六上午 10:00

报告地点：先进制造大楼906室

报 告 人：闫文韬Yan Wentao 

          新加坡国立大学 助理教授Assistant professor

报告摘要：

        Metallic  powder-based additive manufacturing (AM) technologies show promising  potentials to reshape manufacturing industries. However, the wide  adoption is hindered by the lack of understanding of physical mechanisms  and uncertainties due to numerous influential factors. To this end, the speaker has  developed a variety of multi-scale multi-physics models, including:  physically-informed heat source models, specifically, for an electron  beam from micro-scale simulations of electron-atom interactions, and for  a laser incorporating multi-reflection and Fresnel absorption;  high-fidelity powder-scale Discrete Element Method-Computational Fluid  Dynamics (DEM-CFD) models to simulate powder being spread and then  melted; and an efficient Finite Element (FE) model to simulate thermal  stress and distortion at part-scale. The speaker also  realized the seamless linking of Process-Structure-Property models to  predict mechanical properties from process parameters. These models have  proven to be useful in revealing the physical mechanisms, which have  been validated against experiments. 

报告人简介：

        Biography (including but not limited to the speaker’s main qualifications, work experience, monographs, papers, research area and interests):

Dr. Wentao Yan is an assistant professor at the Department of Mechanical Engineering, NUS, starting from August 2018. He was a postdoctoral fellow at Northwestern University and also a guest researcher at the National Institute of Standards and Technology, in the USA. He received his Ph.D. degree at Tsinghua University, Beijing in 03/2017. From 10/2014 to 03/2017, he was a joint Ph.D. student at Northwestern University. He got his Bachelor degree from the Department of Mechanical Engineering, Tsinghua University, Beijing in 2012. Dr. Yan’s research is focused on metal additive manufacturing: computational modeling, experimental validation and data analytics. He has published over 60 papers regarding the multi-scale and multi-physics modeling of powder bed additive manufacturing process in Acta Materialia, Nature Communications, I J Machine Tools & Manufacture, npj Computational Materials, etc. Dr. Yan served as editorial board member of several journals and reviewers of over 40 scientific journals.