南京航空航天大学学报（英文版）2004，Vol.21Issue(3)：225-233,9.
直接金属粉末激光烧结温度场的数值模拟研究
NUMERICAL SIMULATIONS OF TEMPERATURE FIELD IN DIRECT METAL LASER SINTERING PROCESS
摘要
Abstract
A mathematical model is developed for simulating the heat transferring behavior in a direct metal laser sintering process. The model considers the thermal phenomena involved in the process, including conduction, radiation, and convection. A formula for the calculation of the heat conductivity of a sintering system containing solid phase, liquid phase, and gas phase is given. Due to the continuous movement of the laser beam, a local coordinate system centered on the laser beam is used to simplify the analytical calculation. Assuming that it is approximately a Gaussian laser beam, the heat conduction equation is resolved based on the assumption of the thermal insulating boundary conditions and the fixed thermal physical parameters. The FORTRAN language is employed to compile the program to simulate the temperature field in the direct copper powder sintering process. It shows a good agreement with the preliminary experimental results.关键词
直接金属粉末激光烧结/数学模型/温度场/数值模拟Key words
direct metal laser sintering (DMLS)/mathematical model/temperature field/numerical simulation分类
矿业与冶金引用本文复制引用
顾冬冬,沈以赴,刘满仓,潘琰峰,胥橙庭..直接金属粉末激光烧结温度场的数值模拟研究[J].南京航空航天大学学报（英文版）,2004,21(3):225-233,9.基金项目
国家自然科学基金委员会和中国工程物理研究院联合基金(10276017)资助项目. （10276017）
