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3D-printing process design of lattice compressor impeller based on residual stress and deformation.
Scientific Reports ( IF 3.8 ) Pub Date : 2020-01-17 , DOI: 10.1038/s41598-019-57131-1 Dejun Jia 1 , Fanchun Li 1 , Yuan Zhang 1
Scientific Reports ( IF 3.8 ) Pub Date : 2020-01-17 , DOI: 10.1038/s41598-019-57131-1 Dejun Jia 1 , Fanchun Li 1 , Yuan Zhang 1
Affiliation
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The application of a lattice structure in the lightweight design of compressor impellers can reduce their mass and moment of inertia, hence improving the effective carrying of aircraft and reducing the start and braking moments of the impeller. The feasibility of a processing-lattice compressor impeller is the prerequisite for its application. To control the residual deformation and residual stress effectively, a computer-aided design technique is used to simulate the manufacturing process of a compressor impeller. The residual deformation and stress of the compressor impeller during the additive manufacturing process is calculated. The material-stacking process and base-plate- and support-removal process of a TiAl6V4 impeller printed by an SLM280 metal 3D printer are simulated by the finite-element method. The results show that some change in the laser printing parameters leads to a significant impact on the residual stress and deformation amplitude of the impeller. The residual deformation and residual stress of the lattice compressor impeller with the same geometrical appearance after processing are less than the corresponding amplitude of the solid compressor impeller, which also shows that the printed lattice compressor impeller can more easily achieve the design requirements.
中文翻译：
基于残余应力和变形的点阵压缩机叶轮3D打印工艺设计。
在压缩机叶轮的轻量化设计中应用格子结构可以减少其质量和惯性矩，从而提高飞机的有效承载能力并减少叶轮的启动和制动力矩。处理格形压缩机叶轮的可行性是其应用的前提。为了有效地控制残余变形和残余应力，使用计算机辅助设计技术来模拟压缩机叶轮的制造过程。计算了增材制造过程中压缩机叶轮的残余变形和应力。通过有限元方法模拟了由SLM280金属3D打印机打印的TiAl6V4叶轮的材料堆积过程以及基板和支撑的去除过程。结果表明，激光打印参数的某些变化会对叶轮的残余应力和变形幅度产生重大影响。加工后的几何外观相同的格子压缩机叶轮的残余变形和残余应力小于实心压缩机叶轮的相应振幅，这也说明印刷格子压缩机叶轮可以更容易地达到设计要求。
更新日期：2020-01-17
中文翻译：
基于残余应力和变形的点阵压缩机叶轮3D打印工艺设计。
在压缩机叶轮的轻量化设计中应用格子结构可以减少其质量和惯性矩，从而提高飞机的有效承载能力并减少叶轮的启动和制动力矩。处理格形压缩机叶轮的可行性是其应用的前提。为了有效地控制残余变形和残余应力，使用计算机辅助设计技术来模拟压缩机叶轮的制造过程。计算了增材制造过程中压缩机叶轮的残余变形和应力。通过有限元方法模拟了由SLM280金属3D打印机打印的TiAl6V4叶轮的材料堆积过程以及基板和支撑的去除过程。结果表明，激光打印参数的某些变化会对叶轮的残余应力和变形幅度产生重大影响。加工后的几何外观相同的格子压缩机叶轮的残余变形和残余应力小于实心压缩机叶轮的相应振幅，这也说明印刷格子压缩机叶轮可以更容易地达到设计要求。
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