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논문 기본 정보

자료유형
학술저널
저자정보
Aliyev Alissultan (Chosun UNIV.) Kwang-Kyu Lee (Chosun UNIV.) Dong-Gyu Ahn (Chosun UNIV.)
저널정보
한국기계가공학회 한국기계가공학회지 한국기계가공학회지 제20권 제7호
발행연도
2021.7
수록면
33 - 40 (8page)

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Current industrial flow is directed toward reducing the usage of raw materials by reusing parts, which is referred to as a circular economy (CE). Repair is one of the most value-added approaches in CE, which can be efficiently accomplished via additive manufacturing. The repair technology of metallic parts via the directed energy deposition process, which includes the selective removal and redeposition of damaged regions of metallic parts. Residual stress characteristics depend on the shape of the part and the shape of the redeposition region. The objective of this study is to investigate the effects of the radius and corner position of the substrate on the residual stresses for repair by using finite element analysis (FEA). The residual stress distribution of the 45° angle groove at the edge of the circular shape models on the outer and inner radii was analytically investigated. The analysis was accomplished using SYSWELD software by applying a moving heat source with defined material properties and cooling conditions integrated into the FEA model. The results showed a similar pattern of concentrated stress distribution for all models except the 40-mm and 60-mm radii, for which the maximum stress locations were different. The maximum residual stresses are high but lower than the yield strength, suggesting the absence of cracks and fractures due to residual stresses.

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ABSTRACT
1. Introduction
2. Finite Element Analysis
3. Results and Discussions
4. Conclusion
References

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