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| Design and Simulation of Support and Partition for SLM Forming of Aircraft Grid Parts |
| WANG Haoyu1 , RONG Peng1 , XU Weiwei1 , GAO Chuanyun1 , YU Wenjun1 , PANG Shengyong2 |
| (1. AVIC Chengdu Aircraft Industry (Group) Co., Ltd., Chendu 610092, China; 2. State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China) |
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Abstract Grid part is a kind of key functional structure in a certain type of UAV. Grid Parts have complex shapes and high-precision control requirements, and are very suitable for laser selective melting (SLM) manufacturing. In this paper, the additive simulation software developed by Huazhong University of Science and Technology is used to simulate and analyze the SLM forming process of grid parts, and design and optimize the partition printing strategy of supports and key plastic deformation positions. The results show that the key plastic deformation positions in the SLM forming process can be quickly obtained through simulation, and the deformation of the key accumulation layer can be reduced by about 60% through the zone design; by comparing the simulation results after support removal with the test results, the deformation trend and the deformation value between two are in good agreement, the maximum deformation is in the middle grid area, and the deformation is about 2.0mm.
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2020, 
