Numerical simulation of direct metal laser sintering of single-component powder on top of sintered layers

被引：25
作者：
Xiao, Bin [1 ]
Zhang, Yuwen [1 ]
机构：
[1] Univ Missouri, Dept Mech & Aerosp Engn, Columbia, MO 65211 USA
来源：
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME | 2008年 / 130卷 / 04期
关键词：
D O I：
10.1115/1.2951948
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A three-dimensional model describing melting and resolidification of direct metal laser sintering of loose powders on top of sintered layers with a moving Gaussian laser beam is developed. Natural convection in the liquid pool driven by buoyancy and Marangoni effects is taken into account. A temperature transforming model is employed to model melting and resolidification in the laser sintering process. The continuity, momentum, and energy equations are solved using a finite volume method. The effects of dominant processing parameters including number of the existing sintered layers underneath, laser scanning velocity, and initial porosity on the sintering process are investigated.
引用
收藏
页码：0410021 / 04100210
页数：10
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