选择性激光烧结过程温度场数值模拟

Numerical Simulation of Temperature Field during Selective Laser Sintering Process

目的 研究激光烧结过程的温度场 ,分析在选定烧结参数下的烧结深度及烧结宽度 .方法 分析烧结过程及热物性参数之间的变化关系 ,建立合理的有限元模型 ,编制相应的程序对其温度场进行模拟 ;由温度值确定其烧结深度及宽度 ,并用实测温度验证了计算结果 .结果 模拟结果与实测结果相差甚小 .

Aim\ Studying temperature field during select laser sintering and analyzing sintering width and depth under certain selected sintering parameters. Methods\ The sintering process and interrelation between thermal properties are analyzed. The adaptable finite element model is established. The code is programmed and used to simulate the temperature field. The result of simulation is used to define the depth and width of sintering. The computed results are verified with experimental temperature measurement. Results\ The difference between the results of simulation and the measurement is rather little. Conclusion\ The sintering technological parameters can be selected with this numerical simulation method.