Effects of path patterns on residual stresses and deformations of directed energy deposition-arc built blocks

IF 10.2 1区 工程技术 Q1 ENGINEERING, MANUFACTURING
Donghong Ding, Rong Huang, Tao Liu, Lei Yuan, Chuan Liu
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引用次数: 0

Abstract

Deposition path patterns play an important role in controlling residual stresses and deformation in direct energy deposition-arc (DED-arc) process. In this paper, the effects of various path patterns on the evolution of the temperature history, residual stress distribution, and substrate deformations are investigated through experiments and finite element analysis. The predicted results of temperature fields and substrate deformations are verified experimentally by the infrared thermal imager and the laser profile scanner, respectively. It is found that the path patterns have significant effects on the stress distribution in the first few layers, and the minimum substrate deformation is obtained by the zigzag path along the short edge of the block. The proposed finite element method and measuring method are confirmed to be effective and feasible, providing valuable insight into the residual stresses and deformations control in the DED-arc process.
路径模式对定向能沉积弧形构件残余应力和变形的影响
沉积路径模式在控制直接能量沉积-电弧(DED-arc)工艺中的残余应力和变形方面发挥着重要作用。本文通过实验和有限元分析研究了各种路径模式对温度历史演变、残余应力分布和基底变形的影响。红外热成像仪和激光轮廓扫描仪分别对温度场和基底变形的预测结果进行了实验验证。结果发现,路径模式对前几层的应力分布有显著影响,沿块体短边的之字形路径可获得最小的基底变形。所提出的有限元方法和测量方法被证实是有效和可行的,为 DED 电弧工艺中的残余应力和变形控制提供了有价值的见解。
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来源期刊
Virtual and Physical Prototyping
Virtual and Physical Prototyping Engineering-Industrial and Manufacturing Engineering
CiteScore
13.60
自引率
6.60%
发文量
66
期刊介绍: Virtual and Physical Prototyping (VPP) offers an international platform for professionals and academics to exchange innovative concepts and disseminate knowledge across the broad spectrum of virtual and rapid prototyping. The journal is exclusively online and encourages authors to submit supplementary materials such as data sets, color images, animations, and videos to enrich the content experience. Scope: The scope of VPP encompasses various facets of virtual and rapid prototyping. All research articles published in VPP undergo a rigorous peer review process, which includes initial editor screening and anonymous refereeing by independent expert referees. This ensures the high quality and credibility of published work.
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