Simulation of Transient Temperature Field in the Selective Laser Sintering Process of W/Ni Powder Mixture
Selective laser sintering (SLS) is an attractive rapid prototyping and manufacturing (RP&M) technology as well as two-component metal powder has high melting pointer, high mechanical properties and high wear resistance. Hence, its meaningful to analyze its temperature field distribution and dynami-cal evolution rule in sintering process. A threedimensional transient finite element model of SLS on the two-component metal powder W/Ni has been developed to predict the temperature field distribution in this paper. The dynami-cally loading of the moving Gaussian laser thermal resource was realized using the element birth and death technology and the ANSYS Parameter Design Language (APDL) in the model. Considering comprehensively thermal convec-tion and the non-linear behavior of material properties etc., the temperature evo-lution of SLS process has been simulated effectively. The interrelation between the temperature field distribution and the processing parameters are analyzed. The sintering width and depth under certain selected sintering parameters are obtained so as to judge the metallurgical bonding performance between sub-strate and layers. The result of simulation can provide the theoretical basis for selecting reasonable processing parameters.
Selective laser sintering Finite element simulation Temperature field Molten pool.
Jiwen Ren Jianshu Liu Jinju Yin
The School of Electromechanical Engineering, East China Jiaotong University,Nanchang, 330013, P.R. China
国际会议
南昌
英文
494-503
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）