Research on deformation and residual stress for overhanging structure of semi-circular hole by selective laser melting
-
摘要: 基于Simufact additive建立激光选区熔化（selective laser melting，SLM）成形AlSi10Mg合金无支撑半圆孔悬垂结构的仿真模型，分析了不同工序总变形量和残余应力变化情况，研究了几何参数厚度、内/外圆半径对最大总变形量和最大残余应力的影响。结果表明，随着半圆孔厚度增加，最大总变形量和最大残余应力呈增大趋势；半圆孔内圆半径变大，最大总变形量呈增大趋势；半圆孔外圆半径变大，最大总变形量呈减小趋势，但对总变形量影响程度较小。Abstract: The simulation model of unsupported semi-circular hole overhanging structure of SLM formed AlSi10Mg alloy was established based on Simufact additive. The total distortion and residual stress in different processes were analyzed. The effects of geometric parameter thickness and inner and outer circle radius on the max total distortion and max residual stress were studied. The results show that the max total distortion and the max residual stress increase with the increase of the thickness of the semi-circular hole; the radius of the inner circle of the semi-circular hole becomes larger, and the max total distortion tends to increase; the outer radius of the semi-circular hole becomes larger, and the max total distortion decreases, but it has little effect on the total distortion.
-
Key words:
- selective laser melting /
- AlSi10Mg /
- overhanging structure /
- residual stress
-
[1] 刘婷婷, 章林. 选区激光熔化金属增材制造实验质量控制[J]. 实验技术与管理,2022,39(9):48-53. doi: 10.16791/j.cnki.sjg.2022.09.008 [2] 王飞, 杜星杰, 刘博玮, 等. SLM成形悬垂结构翘曲变形分析及修正[J]. 重庆理工大学学报:自然科学,2022,36(9):91-97. [3] Mercelis P, Kruth J P, Vaerenbergh J V. Feedback control of selective laser melting[C]. 3rd International Conference on Advanced Research in Virtual and Rapid Prototyping, Leiria, Portugal: CRC Press, 2007: 521-527. [4] 段声勤, 刘婷婷, 廖文和, 等. 悬垂圆孔激光选区熔化成形质量研究[J]. 中国激光,2018,45(4):190-198. [5] 吴根丽, 刘婷婷, 张长东, 等. Ti6Al4V激光选区熔化成形悬垂结构的质量研究[J]. 中国机械工程,2016,27(13):1810-1815. doi: 10.3969/j.issn.1004-132X.2016.13.020 [6] Ameen W, AlAhmari A, Mian S H, et al. Optimization of tree-like support for titanium overhang structures produced via electron beam melting[J]. Sustainability,2022,14(20):13017-13017. doi: 10.3390/su142013017 [7] Gülcan O, Günaydın K, Çelik A, et al. The effect of contactless support parameters on the mechanical properties of laser powder bed fusion produced overhang parts[J]. The International Journal of Advanced Manufacturing Technology,2022,122(7-8):3235-3253. doi: 10.1007/s00170-022-10135-0 [8] 何先定, 吴凌, 安治国. 选区激光熔化成形AlSi10Mg铝合金零件支撑结构的研究[J]. 锻压技术,2020,45(9):113-117,136. [9] 段声勤. 金属悬垂圆孔结构激光选区熔化成形工艺优化[D]. 南京: 南京理工大学, 2018. [10] 于宝义, 何亮, 郑黎, 等. SLM成形AlSi10Mg合金残余应力数值模拟及组织性能分析[J]. 特种铸造及有色合金,2020,40(4):349-355. [11] 王美婷, 郑黎, 何亮, 等. SLM成形AlSi10Mg合金的变形行为与残余应力数值模拟[J]. 应用激光,2022,42(10):67-75. [12] 赵娟, 邢蕊, 李文瑛, 等. 热处理工艺对增材制造AlSi10Mg合金组织与力学性能的影响[J]. 铸造技术,2021,42(2):85-89. [13] 纪宏志, 袁林, 单德彬. 不同冷却速率下7A09铝合金冷却收缩行为研究[J]. 材料科学与工艺,2011,19(5):17-20. -
下载:
点击查看大图
图(9) / 表(1)
计量
- 文章访问数: 53
- HTML全文浏览量: 19
- PDF下载量: 14
- 被引次数: 0
