Overview of finite elements simulation of temperature profile to estimate properties of materials 3D-printed by laser powder-bed fusion

作     者：Habimana Jean Willy Xinwei Li Yong Hao Tan Zhe Chen Mehmet Cagirici Ramadan Borayek Tun Seng Herng Chun Yee Aaron Ong Chaojiang Li Jun Ding Habimana Jean Willy;李辛未;Yong Hao Tan;陈哲;Mehmet Cagirici;Ramadan Borayek;Tun Seng Herng;Chun Yee Aaron Ong;李朝将;丁军

作者机构：Department of Materials Science and EngineeringFaculty of EngineeringNational University of Singapore9 Engineering Drive 1Singapore 117576Singapore 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2020年第29卷第4期

页      面：98-109页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Project supported by Singapore Maritime Institute and the Advanced Material&Manufacturing R&D Program(Grant Nos.SMI-2016-OF-04 and R261502032592) 

主　　题：selective laser melting powder bed fusion finite element modeling laser absorption 

摘      要：Laser powder bed fusion(LPBF),like many other additive manufacturing techniques,offers flexibility in design expected to become a disruption to the manufacturing *** current cost of LPBF process does not favor a try-anderror way of research,which makes modelling and simulation a field of superior importance in that area of *** this work,various methods used to overcome challenges in modeling at different levels of approximation of LPBF process are *** efforts made towards a reliable and computationally effective model to simulate LPBF process using finite element(FE)codes are presented.A combination of ray-tracing technique,the solution of the radiation transfer equation and absorption measurements has been used to establish an analytical equation,which gives a more accurate approximation of laser energy deposition in powder-substrate *** this new analytical energy deposition model is used in in FE simulation,with other physics carefully set,it enables us to get reliable cooling curves and melt track morphology that agree well with experimental *** use of more computationally effective approximation,without explicit topological changes,allows to simulate wider geometries and longer scanning time leading to many applications in real engineering *** applications are herein presented including:prediction of printing quality through the simulated overlapping of consecutive melt tracks,simulation of LPBF of a mixture of materials and estimation of martensite inclusion in printed steel.