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A study on the effect of shape and number of supports in additive manufacturing process by using a macro heat transfer analysis

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Abstract

In this study, a numerical analysis model was developed for analyzing temperature distribution histories, and it was found to perform well based on a comparison of its temperature history results with the temperature history measurements of each layer performed using an IR camera during PBF stacking and the temperature distribution analysis results obtained using vAMpire/Macro®. In addition, the maximum height at which the maximum temperature was reached in each process was predicted through 3D modeling analysis. Furthermore, the temperature distribution histories were analyzed by considering cone supports, regular supports, and wall supports for heat dissipation, and the differences in the heat dissipation effect according to the type and number of supports were quantitatively analyzed. In this manner, it was possible to solve the stacking problem by applying suitable supports, and we suggest that quantitative analysis for solving problems such as stacking failures or thermal deformation is possible through heat transfer analysis.

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Abbreviations

ρ :

Density

C p :

Specific heat

q :

Heat flux

k :

Thermal conductivity

h :

Convective heat transfer coefficient

ε :

Surface emissivity

σ :

Stefan-Boltzmann constant

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Author information

Authors and Affiliations

  1. Dept. of Mechanical Engineering, Graduate School, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, Korea

    Seok-Chul Yun

  2. Dept. of Industry-University, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon, Korea

    Kyunsuk Choi

  3. Dept. of Mechanical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk, Korea

    Jae-Woong Kim

Authors
  1. Seok-Chul Yun
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  2. Kyunsuk Choi
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  3. Jae-Woong Kim
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Corresponding author

Correspondence to Jae-Woong Kim.

Additional information

Seok-Chul Yun received his B.Sc. degree from Yeungnam University, Korea, in 2007. He received his M.Sc. degree in Mechanical Engineering from Yeungnam University, Korea, in 2009. His research interests include welding process optimization, additive manufacturing process.

Kyunsuk Choi received his B.Sc. and M.Sc. degrees, in Metallurgical Engineering from Inha University, in 2001 and 2003, respectively. He received his Ph.D. degrees in Materials Science and Engineering from Yonsei University, Korea, in 2017. He is currently a Professor at the Department of Industry-University Convergence, Hanbat National University, Korea. His research interests include metallic additive manufacturing materials, digital twin and autonomous systems.

Jae-Woong Kim received his B.Sc. degree from Ajou University, Korea, in 1982. He received his M.Sc. and Ph.D. degrees, in Mech. and Production Eng. from Korea Advanced Institute of Science and Technology, in 1984 and 1991, respectively. He is currently a Professor at the School of Mechanical Eng., Yeungnam University, Korea. His research interests include analyses of welding and additive manufacturing process, thermal stress and distortion.

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Yun, SC., Choi, K. & Kim, JW. A study on the effect of shape and number of supports in additive manufacturing process by using a macro heat transfer analysis. J Mech Sci Technol 38, 851–860 (2024). https://doi.org/10.1007/s12206-024-0132-y

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  • DOI: https://doi.org/10.1007/s12206-024-0132-y

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