Journal of the Korean Society of Mechanical Technology (한국기계기술학회지)

Korean Society of Mechanical Technology (한국기계기술학회)
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Prediction of Velocity of Shot Ball with Blade Shapes based on Discrete Element Analysis

이산요소해석에 기초한 블레이드 형상에 따른 숏볼의 투사속도 예측

  • Received : 2018.10.31
  • Accepted : 2018.11.30
  • Published : 2018.12.28
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Abstract

In this study, the regression equation was suggested to predict of the shot ball velocity according to blade shapes based on discrete element (DE) analysis. First, the flat type blade DE model was used in the analysis, the validity of the DE model was verified by giving that the velocity of the shot ball almost equal to the theoretical one. Next, the DE analyses for curved and combined blade models was accomplished, and their analytical velocities of shot ball were compared with the theoretical one. The velocity of combined blade model was greatest. From this, the regression equation for velocity of shot ball according to the blade shape based on the DE analysis was derived. Additionally, the wind speed measurement experiment was carried out, and the experimental result and analytical one were the same. Ultimately, it was confirmed that the prediction method of the velocity of shot ball based on DE analysis was effective.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. S. H. Lee, "The estimation of 2-step shot peening effect for reliability design of mechanical elements," Korean Society of Mechanical Technology, Vol. 4, No. 2, pp. 273-278, 2002
  2. S. H. Lee, J. D. Lee, J. S. Kang, "Measurement and analysis of stress distribution in shot peening by FEM," Korean Society of Mechanical Technology, Vol. 3, No. 2, pp. 77-83, 2001
  3. M. Katarina, B. Sara, B. Otakar, G. Mario, T. Libor, "Fatigue behavior of X70 micro- alloyed steel after severe shot peening," International Journal of Fatigue, Vol. 55, pp. 33-42, 2013 https://doi.org/10.1016/j.ijfatigue.2013.04.021
  4. S. M. Hassani-Gangaraj, A. Moridi, M. Gualiano, A. Chidini, "Nitriding duration reduction without sacrificing mechanical characteristics and fatigue behavior: The beneficial effect of surface nano-crystallization by prior severe shot peening," Materials and Design, Vol. 55, pp. 492-498, 2014 https://doi.org/10.1016/j.matdes.2013.10.015
  5. U. Okan, V. Remzi, "Almen intensity effect on microstructure and mechanical properties of low carbon steel subjected to severe shot peening," Applied Surface Science, Vol. 290, pp. 40-47, 2014 https://doi.org/10.1016/j.apsusc.2013.10.184
  6. H. Diep, H. Bae, M. Ramulu, "Manual shot peening intensity and coverage effects on fatigue performance of aluminum alloy," Proceedings of the 11th International Conference on Shot Peening, pp. 25-30, 2011
  7. I. Sumiyoshi, A. Tange, H. Okada, "Shot peening conditions and processing properties for spring steel," Proceedings of the 11th International Conference on Shot Peening, pp. 55-60, 2011
  8. https://www.linkedin.com/pulse/hey-blast-maintenanceguys-carole-koz
  9. Y. B. Ju, "Three-dimensional finite element residual stress fields induced by random impacts of multishot with rotation," Master of Science Thesis, School of Mechanical Engineering, Seoul National University of Science and Technology, 2014
  10. I. Kisuke, "The analyses of the shot velocity thrown from the nozzle and the blade wheel," Proceedings of the 5th International Confernece on Shot Peening, pp. 55-60, 1993
  11. A. Tange, H. Okada, "Shot peening and coverage," Proceedings of the 8th International Conference on Shot Peening, pp. 516-522, 2002
  12. The Carborundum Company., "Curved vane for throwing wheels," US Patent, No. 410925, 1973
  13. Seoul Surface Treatment Co., Technical Data, "http://www.sstblast.com," 2018
  14. Sekwang Co., "http://www.skshot.co.kr/home/product.php?mid=40," 2018
  15. Kukdong ENG, "https://blog.naver.com/hksl2014/140207869579," 2018
  16. Sungmyung Engineering Co., "https://blog.naver.com/sungmyungeng," 2018
  17. DK-ENG Co., "http://dk-eng.net/," 2018